Question

Which two equations are equivalent?

A
y = (x + 4)2
y = x2 + 16


B
y = (x – 3)2
y = x2 – 6x + 9


C
y = (x + 2)2
y = x2 + 2x + 2


D
y = (x – 6)2
y = x2 – 12x – 36

Answer 1

use substitution, elimination or cross-multiplication method.

Answer 2

\[\left( a-b \right)^{2}=a ^{2}-2ab+b ^{2}\]