Question

Solve x2 + 9x + 8 = 0 by completing the square. What are the solutions? {1, 8} {1,-8} {-1,-8}

Answer 1

(-1,-8)

Explanation:

p= 8

s=9

Find two numbers that when you multiply will give you 8 and when you add it will give you 9.

The two numbers are (1,8)

Answer 2

x=-1 and x=-8 {-1,-8}

Explanation:

x^2+9x+8=0

(x+1)(x+8)=0

x=-1 and x=-8