Question

The x3 was supposed to be an exponent not 3x

he or she meant to say x^3

2 + x^3 = 18
x^3 = 16
x = 3radical16

Answer 1

The value of x is
`2\sqrt[3]{2}`

Explanation:

We are given
`2+x^3=18`

We need to solve for x

First we subtract 2 both sides

`x^3=18-2=16`

Taking cube roots both sides to isolate x

`x=\sqrt[3]{16}`

Simplify the radical

`x=2\sqrt[3]{2}`

Thus, The value of x is
`2\sqrt[3]{2}`