Joshua T. answered 15d
Highly Experienced Math Tutor — Fresh, Effective, Student-Focused
Let's solve this algebraic equation step by step. We start with the original equation.
∛(2x+7) + 5 = 0
To solve for x, we want it by itself. To do this, we should first get rid of the 5 by subtracting it from both sides.
∛(2x + 7) + 5 - 5 = 0 - 5
∛(2x + 7) = -5
To get rid of the cube root, we can raise both sides of the equation to the 3rd power.
(∛(2x + 7))3 = (-5)3
2x + 7 = -125
Let's now subtract 7 from both sides and then divide by 2.
2x + 7 = -125
2x + 7 - 7 = -125 - 7
2x = -132
2x / 2= -132 / 2
x = -66
The solution to the equation is x = -66.