CPM Homework Help : A2C Problem 12-167

Solve the equations below.

$\left(x + 2\right)^{2} − \left(x − 2\right)^{2} = 8$
Hint (a):
Expand the binomials before distributing the minus (−).
Answer (a):
$x = 1$ $\left(x + 2\right)^{2} + \left(x − 2\right)^{2} = \left(2x\right)^{2}$