usermaine27 usermaine27
  • 07-02-2017
  • Mathematics
contestada

Which is a solution to (x – 3)(x + 9) = –27?

x = –9
x = –3
x = 0
x = 6

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apologiabiology
apologiabiology apologiabiology
  • 07-02-2017
expand
x²+6x-27=-27
add 27 both sides
x²+6x=0
factor
x(x+6)=0
set to zero

x=0

x+6=0
x=-6


x=0 or -6

answer is 0 since -6 is not listed
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samachey51 samachey51
  • 07-02-2017
first you would multiply x by x so x^2. next x*9 would be 9x then -3*x would be -3x last you would do -3*9 would be -27 then you would simplify that out 
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