Question

Complete the square x^2+6x=12

Answer 1

(x + 3)^2 = 21.

Explanation:

x^2 + 6x = 12

6 / 2 = 3 so we have:

x^2 + 6x = (x + 3)^2 - 9 so:

(x + 3)^2 - 9 = 12

(x + 3)^2 = 21.