Question

Solve x2 + 10x + 7 = 0 by completing the square.
Which equation is used in the process?

Answer 1

x^2 + 10x + 7 = 0
x^2 + 10x = -7

10 / 2 = 5
5^2 = 25

x^2 + 10x + 25 = -7 + 25
(x + 5)^2 = 18

x = -5 +/- 3(sqrt)2

Answer 2

Thanks!

Answer 3

You're welcome! And thanks for the medal. :)