Question

Solve the equation for x. Square root of x = 20

Answer 1

x = 16

Explanation:

Subtract x from both sides of the equation

`√(x) = 20 - x`

To remove the radical on the left side of the equation, square both sides of the equation.

`√(x)^(2) = (20 - x)^(2)`

Simplify each side of the equation.

`x = (20 - x)^(2)`

Solve for x.

`x = 25, 16`

Exclude the solutions that do not make
`x + √(x) = 20` true.

x = 16