Complete the square of the equation below.

Q. Complete the square : x² + 4x - 12A. Completing the square is putting the given equation into the form (x + a) ² + bFirst, a = the coefficient of x 2so in this case a = 4 = 2 Then to find b we calculate how to get to our desired equation from the expansion of (x + a)²so in our example we calculate (x + 2)²= (x + 2) (x + 2) = x² + 4x + 4but we want x² + 4x - 12so how do we get from 4 to -12?-12- 4 = -16 = bNow we have found both answers, don’t forget to sub them back into the desired format to get us that last mark!!!ANS = (x + 2)² -16