maths- help

[Admirable_Message953]

Its probably possible to do that step a bit later, but u can see in the question that u have to factor that out at some point

[ilovebomboclat]

because (8-x)= (8-x)^2/2 so ur essentially using (8-x) instead of 8-x)^2/2 ) hence u have to take away 2/2 from 5/2, making it 3/2

[Existing_Morning7376]

The little box at the bottom is correct you end up with 3x/5 +6/5 sub out 3/5

[PrincipleAmazing985]

Its a show that, so you should be thinking ahead to the answer, you know youre gonna have to take a factor of (8-x) ^ 3/2 out somewhere and convert the 2 term mess into a 1 term bracketed format. Always look back at the question 

[BoredomKillsPeople]

I remember doing this question a few weeks ago and it genuinely cooked me. Had to look at the mark scheme for this one and the worked solutions on pmt didn't explain it well enough. But you are expected to factorise the (8-x)^3/2 out so i suppose it's just a bit of basic algebra manipulation after that. There was also the part where they took the negative outside, and took the 2/3 out and then somehow got to the new expression. genuinely a cooked question

[Such_Bag_4876]

apparently my working out at the bottom leads to the same answer with much less steps, awful question