CPM Homework Help : CCA2 Problem 8-23

Find $x\ \text{if}\ 2^{p(x)} = 4$ and $p\left(x\right) = x^{2} − 4x − 3$ .

Hint:

Since $4 = 2^2$ , what does $p\left(x\right)$ have to equal?

Answer:

$x = −1, x = 5$