Question

What is the solution of the equation 8x^3 = -64?

Answer 1

`x=-2`

Explanation:

`8x^3=-64`

Divide both sides by 8:

`(8x^3)/(8)=(-64)/(8)`

`x^3=-8`

Cube root both sides:

`\sqrt[3]{x^3} =\sqrt[3]{-8}`

`x=-2`