Which statement describes how to solve 3sqrt (x^2-6) = 3sqrt (2x+2)

Square both sides and then solves the resulting quadratic equations

Square both sides and then solve the resulting cubic equations

Cube both sides and then solve the resulting quadratic equations

Cube both sides and then solve the resulting cubic equations

Question

Mathematics

Ali Bowen

14 October, 17:30

Which statement describes how to solve 3sqrt (x^2-6) = 3sqrt (2x+2)

Square both sides and then solves the resulting quadratic equations

Square both sides and then solve the resulting cubic equations

Cube both sides and then solve the resulting quadratic equations

Cube both sides and then solve the resulting cubic equations

+3

Answers (2)

Know the Answer?

Francesca Morgan · Answer 1

3√ (x^2-6) = 3√ (2x+2) square both sides

9 (x^2-6) = 9 (2x+2)

x^2-6=2x+2

x^2-2x-8=0 then solve the resulting quadratic equation.

x^2-4x+2x-8=0

x (x-4) + 2 (x-8) = 0

(x+2) (x-8) = 0

x=-2, 8

Marlie Valdez · Answer 2

I belive its Square both sides and then solve the resulting cubic equations