Question

Solve the equation for all values of x by completing the square.
x2 + 8.0 + 15 = 0

Answer 1

x= -3

x= -5

Explanation:

x^2 + 8x + 15 = 0

find which 2 numbers when multiplied equal 15 and when added equal 8

they are 3 and 5

(x+3)(x+5)

x+3 =0

x+5=0

x= -3

x= -5