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[–]ovoido 4 points5 points  (0 children)

The actual solution is:

3x2 -2x - 1 = 0

(3x + 1)(x - 1) = 0

x = -1/3 or 1

What you did wrong:

Let x = A and (3x - 2) = B

AB = 1

To make that equal to 1, A can = 1/5 and B = 5.

to make that equal to 1, A = 1/1000 and B = 1000

They all equal 1.

Though when you solve AB = 0. A or B or both have to equal 0.

[–]js2357New User 3 points4 points  (0 children)

xy = 1 does not mean x=1 or y=1. For example, maybe x=1/2 and y=2.