Solve by Making a U-Substitution
- $\mathrm{x}-13 \mathrm{x}^{1 / 2}+42=0$ A) $\{36,49\}$

Multiple Choice

Solve by making a u-substitution
- $\mathrm{x}-13 \mathrm{x}^{1 / 2}+42=0$

A) $\{36,49\}$
B) $\{-36,49\}$ .
C) $\{6,7\}$
D) $\{-6,7\}$ .