book Maths Puzzle Numerical Ability

(3x-2)^2=9x^2-6. Did I do this problem right? I just want to make sure before I hand it in.

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I am truly lost...the directions read, write an equation in slope-intercept form of the line that passes through the given point and is parallel to the graph of each equation. the problem reads (2, -7), y=x-2 Factor each expression completely:
-21 a x3y3 - 28x3y4 + 7x2y3z

xy + 3y -6x -18

6a2 + 4bx - 15a-10b

16a2 + 8a - 15