Question

Whats the solutions for f(x)=- x^2-6x-8

Answer 1

x=-4 x=-2

Explanation:

Set this equal to zero to find the solutions

0=- x^2-6x-8

Divide by -1

0/-1 = x^2 +6x+8

0 = x^2 +6x+8

Factor

What 2 numbers multiply to 8 and add to 6

4*2 = 8

4+2 = 6

0 = (x+4)(x+2)

Using the zero product property

x+4 = 0 x+2 =0

x=-4 x=-2

Answer 2

x = -4, -2

Explanation:

-x² - 6x - 8 = 0

x² + 6x + 8 = 0

x² + 4x + 2x + 8 = 0

x(x + 4) + 2(x + 4) = 0

(x + 4)(x + 2) = 0

x = -4, -2