Question

How do you solve `x^2+10x=39` by completing the square?

Answer 1

-13 and 3

Explanation:

`x^2 + 10x = 39`
`x^2 + 10x + 25 = 39 + 25 = 64`
`(x + 5)^2 = 64`
`(x + 5) = +- 8`
`x = - 5 +- 8`
The 2 real roots are:
x = -13 and x = 3.