Question

How do you solve `x^ { 2} + x = 25+ x`?

Answer 1

`x = +-5`

Explanation:

`x^2 + x = 25 + x`
`x^2 + x - x = 25 + x - x`
`x^2 = 25`
`x = sqrt25 = +-5`

It's `+-5` because both `5^2` and `(-5)^2` are equal to 25