### Home > A2C > Chapter 9 > Lesson 9.3.3 > Problem 9-173

9-173.

Determine whether *x* = −2 is a solution to the equation *x*^{4} − 4*x* = 8*x*^{2} − 40. Show why or why not. Homework Help ✎

Try substituting −2 into the equation.

9-173.

Determine whether *x* = −2 is a solution to the equation *x*^{4} − 4*x* = 8*x*^{2} − 40. Show why or why not. Homework Help ✎

Try substituting −2 into the equation.