Answer:
I'm doing the exact same question rn sorry if its wrong, try D.
Exponent rule added:
12xx^2 -9x^2
rewrite 9 as 3 x 3, rewrite 12 as 3 x 4
3 * 4xx^2 - 3 * 3x^2 ( * is multiply)
factor common terms:
3x^2(4x-3) - answer.
<h3>we can make the below formulas with this information:</h3>

<h3>hope it helped you :-)</h3>
Answer:
x = y+5/3
IF ITS WRONG IM SO SORRY !!!