Answer:
-4x=y
Step-by-step explanation:
1) y=-x/4
2) x=-y/4
3) 4x=-y
4) -4x=y
Answer:True
a=x and b=9
(x+9)(x−9)
Explanation:
Since both terms are perfect squares, factor using the difference of squares formula, a2−b2=(a+b)(a−b)
