Solve by Making a U-Substitution
- $x^{4}-33 x^{2}+32=0$ A) $\{ \pm 1, \pm 4 \sqrt{2}\}$

Multiple Choice

Solve by making a u-substitution
- $x^{4}-33 x^{2}+32=0$

A) $\{ \pm 1, \pm 4 \sqrt{2}\}$
B) $\{ \pm 2, \pm 4\}$
C) $\{ \pm 1, \pm 4 \sqrt{3}\}$
D) $\{ \pm 1, \pm \sqrt{2}\}$