Answer:
x = x
Explanation:
The first step here is to use the distributive property to make the first equation back into a polynomial.
The way we do this is by multiplying each term on the inside of the parentheses by the -2 on the outside.
-2 x x = -2x
-2 x 3 = -6
So, our new equation reads: -2x - 6
-2x - 6 = -2x + 3 - 9
Our next step is to subtract the 9 from 3.
-2x - 6 = -2x - 6
We add 6 to each side
-2x = -2x
x = x
0 = 0