Question

Solve by square roots: 2x squared +11 = 131

Answer 1

Answer:

x = ± 2$\sqrt{15}$

Step-by-step explanation:

Given

2x² + 11 = 131 ( subtract 11 from both sides )

2x² = 120 ( divide both sides by 2 )

x² = 60 ( take the square root of both sides )

x = ± $\sqrt{60}$ = ± $\sqrt{4(15)}$ = ± 2$\sqrt{15}$