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27 December, 15:32

22. What is a solution to (x + 6) (x + 2) = 60?

A. x = - 6

B. x=-4

C. X = 4

D. x = 12

+3
Answers (2)
  1. 27 December, 17:17
    0
    (x+6) (x+2) = 60

    expand

    x^2+6x+2x+12=60

    x^2+8x+12=60

    minus 60 both sides

    x^2+8x-48=0

    factor

    what multiplies to - 48 and adds to 8

    -4 and 12

    (x-4) (x+12) = 0

    set each to zero

    x-4=0

    x=4

    x+12=0

    x=-12

    x=4 or - 12
  2. 27 December, 17:55
    0
    The answer is 4 but I'm pretty sure the first person covered the explanation
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