Write an equation equivalent to the one below by writing the trinomial as a perfect square trinomial. x2 + 8x + 9 = - ­9 ?

x2 + 8x + 16 = 16

x2 + 8x + 16 =- ­2

x2 + 8x + 64 = 46

x2 + 8x + 64 = 64

1 Answer
Feb 26, 2018

x2+8x+16=2

Explanation:

using the method of completing the square

x2+2(4)x+1616+9=9

x2+8x+167=9

x2+8x+16=9+7

x2+8x+16=2