### Home > A2C > Chapter 9 > Lesson 9.1.1 > Problem9-25

9-25.

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

Start by finding a common base, then substitute p(x) into the first equation and solve.

$x = −1, x = 5$