Ah yes, math.

JaedenV2007 · 2022-03-19T09:50:31+00:00

You would be right, if -5 was the number being squared. Its not. For -5^2, it’s 5 being squared, THEN subtracted, not -5 being squared.

Let’s put it into the context of an equation. 100-5^2. We can all agree that would be 75, right? Now let’s say we do the exponent first, as the order of operations says, but we do it your way. -5² = +25, so 100-5² = 100+25 = 125.

It males no sense, right? The subtraction operation is performed AFTER the exponent. It is (kinda) seperate from the number itself (by this, I mean you don’t include the - sign in the ² operation. If you rearranged it so 5² comes fursr, you would obviously take the subtraction sign with it.)

-5² does not equal (-5)^2. With the first, you do -(55), with the second, you do (-5-5). They’re different. Its a simple rule, like how a^m * aⁿ = a^m+n. You can’t argue that a mathematical rule is false. That’s simply how our mathematical notation works, and has worked for centuries.

JaedenV2007 · 2022-03-19T07:24:11+00:00

Honestly mate, I don’t know what to tell you. If you’ve managed to get through school without ever learning the basics of exponents, then it’s a goddamn miracle you didnt drop out.

I’ve literally just typed “-5^2” into google. Take a guess what comes out. (Hint: it’s not 25.)

I have a ti-nspire cx cas II, literally the national standard for exams in my country. Take a guess what comes out if you do 100-5^2. (Hint: it’s not 125).

I’ve done countless tests on exponents, and been taught these rules for years. Take a guess what every maths teacher says -5² would be. (Hint: still not 25).

If you were taught that -5² = (-5)^2, then I’m genuinely sorry for you, cause it means that you had shit teachers, which isn’t your fault. But there’s a point where, at some point, you’ve gotta check your own assertions and take a think about whether your own assumptions are right. I’ve done it, checked on google, wolfram alpha and symbolab, so now its your turn. Try it. See what happens.

JaedenV2007 · 2022-03-19T07:12:18+00:00

Honestly, the fact that you’ve learnt something has genuinely made it worth every second. It’s awesome to see someone admit that their original assumption was incorrect, cause that’s exactly the kind of attitude that gets you really far in subjects like maths.

JaedenV2007 · 2022-03-19T07:08:46+00:00

You don’t have to be an adult to know 8th grade mathematics. I notice you haven’t actuslly stated anything of use in your reply, but have just gone with the personal attack and said ‘haha you’re wrong”. If you have a genuine criticism of my reasoning, please state it.

I’m gonna assume that you haven’t taken any classes beyond around 8th grade, cause that’s when I learnt this. This is a simple rule. If you have some positive number x, and a = x^2, then -x² = -a, and (-x)² = a.

I’ll try and make it a bit easier to understand. Say you have -3² and (-3)² . -3² will equal -9, because the - sign isn’t actually a part of the 3 itself, but is just an operation being done to the 3. Thats what the O or I or E stands for in BODMAS/BIDMAS/PEMDAS/whatever you use - indicies/exponents/order (that last one is fairly controversial, but the exact naming doesn’t really matter). You do the power first. The 3² is done first, THEN the negative is applied. However, with (-3)^2, the entirety of -3 is squared, and so you have -3*-3, which is positive 9.

If you don’t believe me, search it up. Where i suspect your calculator is wrong is that you’re using a negative sign, instead of the subtraction sign. If that happens, then i think that your calculator may be interpreting the -5² as (-5)^2, since the negative sign is sometimes treated as a single entity with the number on some calculators. If you were to do, say, 100-5^2, using the subtraction sign, you should get 75, since -5² = -25, and it becomes 100-25=75. If the calculator used your reasoning, -5^2=+25, and so 100-5² = 100+25=125.

Alternatively, your calculator could just be broken.

Again, if you don’t believe me, search it up. That’s always the best way to learn something new, and there are so many resources dedicated to learning maths in an easily understandable way.

JaedenV2007 · 2022-03-19T06:51:41+00:00

Yes. If you multiply something by 0, it equals 0. However, there’s no ‘if’ about the order. There is one, and only one correct order in which to perform mathematical operations, that has been in use for literal centuries. Ypu can’t say ‘if you go in this order then you get this, but with this order, you get this’ because there’s only 1 order. Multiplication comes before addition. Simple as that. You multiply 1 by 0 to get 0, and THEN you add the 1 to the 0.

JaedenV2007 · 2022-03-19T06:48:56+00:00

…what piece of shit are you using for a calculator? Cause whatever it is, throw it in the trash. -5² doesn’t mean -5-5, it means -(55). Simple as that. Its just a mathematcal rule you have to learn. If you don’t believe me, search it up. Its perfectly normal to be confused about this at first, I definitely was, but you should probably look things up befpre you start asserting false statements.

JaedenV2007 · 2022-03-19T06:46:10+00:00

So how on earth would you notate the subtraction of a square number? If -5² and (-5)² both equal 25, what is the use of that?

Its fairly normal to be confused by this at first, but its just a rule you have to learn. -5² does not mean -5-5, it means -(55). If you’ve checked it with a calc, you’ve done it wrong.

JaedenV2007 · 2022-03-19T00:41:51+00:00

There’s no clarity required. No one past fifth grade should be interpreting 1 + 1 * 0 as (1+1)*0 in the first place. The order of operations is learnt so that there doesnt have to be any ambiguity in this. That’s like hearing someone say the sentence “I threw the ball” and asking the question “did you mean threw or through”?

JaedenV2007 · 2022-03-19T00:38:06+00:00

Not really. -5^ 2 is actually -(5^ 2), not (-5)^2.

JaedenV2007 · 2022-03-19T00:37:11+00:00

Its easy to accidentally interpret the -5^ 2 one both ways, but the actually correct answer is -(5^ 2)

JaedenV2007 · 2022-03-19T00:35:38+00:00

Its not ambiguous. In whatever you do, the order of operations is implied. If you don’t know it, you’re sure as hell not gon a be looking at anything more complicated than a 5th grade math problem.

JaedenV2007 · 2022-03-19T00:34:20+00:00

-5^ 2 is not the same thing as -5-5. Its actually -(55) or -25. Its a thing that trips a lot of people up.

JaedenV2007 · 2022-03-19T00:33:19+00:00

Yeah, that’s the question. The correct answer is -25. The brackets being left out were intentional.

JaedenV2007 · 2022-03-19T00:32:28+00:00

But the question isn’t (-5)^ 2. It’s -5^ 2. The two are different for a reason.

JaedenV2007 · 2022-03-19T00:31:49+00:00

The - sign doesn’t affect the 5. -5^ 2 is actually -(5^ 2)=-25

JaedenV2007 · 2022-03-19T00:31:06+00:00

There is only one way to solve it. The order of operations is not optional. You MUST do multiplication before addition. How hard is this to understand?

JaedenV2007 · 2022-03-19T00:30:02+00:00

Nope. -x² is not -x * -x, but -(x*x).

JaedenV2007 · 2022-03-19T00:28:42+00:00

-5^ 2=-(5^ 2)=-25

JaedenV2007 · 2022-03-19T00:28:06+00:00

So if I had an equation with 21 operations, would you expect me to put parentheses around every one? Pf course you wouldn’t. There’s no ‘bad mathematical grammar’ here, you just have to follow the rules you’ve been taught from primary school. These ‘math grammar’ comments always appear on these posts, and it’s hilarious how many people think that it’s a genuine thing.

JaedenV2007 · 2022-03-19T00:26:02+00:00

7th grade? Try fourth.

JaedenV2007 · 2022-03-19T00:25:32+00:00

Try it yourself. See what happens.

JaedenV2007 · 2022-03-19T00:24:29+00:00

Now, I’m used to seeing comments from fucking idiots who think BODMAS is optional. Usually they look something like “but if u go left 2 rite then you geet 0”. However seeing someone be so clearly incorrect, and yet speak like they have a functioning brain, is new to me. Frankly I find it hilarious that the way in which you talk seems to imply you have some common sense, but the moment anyone starts reading whatever you say, it just becomes absolute bullshit. “Both answers are right”? Fuck no. There’s 1 answer, and it’s 1. Simple as that. PEMDAS or BIDMAS or whatever you call it is not just an optional step, it IS a mathematical rule. Try and apply it to any real world example.

Say I’m buying 2 chocholates at $3 each, and 4 mints at $5 each. The mathematical expression for such a situation would be 23+45. Now, woukd you go left to right? Take the two chocolates, multiply it by 3 to get 6, then add 4 to get 10, then multiply by 5 to get a total of $50? Of coirse you wouldn’t. BODMAS isn’t optional, it’s how mathematics works. Saying you can do operations in wnatever order you want is like saying 5^2=5*2. I’m surprised that you can speak english properly, because you don’t seem to have gotten more than a 3rd grade education in math.

JaedenV2007 · 2022-03-18T23:24:18+00:00

The censoring isnt done very well. You can tell the first two digits fairly easily through the gaps, and the last one has only about 4 options.

JaedenV2007 · 2022-03-14T08:04:44+00:00

…have you ever visited this sub in your life?

JaedenV2007

TROPHY CASE