winfreychimya0 winfreychimya0
  • 15-12-2017
  • Mathematics
contestada

Use completing the square to solve for x in the equation (x-12)(x+4)=9

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dawaynegolderp0hyms dawaynegolderp0hyms
  • 15-12-2017
move all terms to the left side and set equal to zero. then set the factors equal to 0 x = 13,3
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kocchi
kocchi kocchi
  • 15-12-2017
(x-12)(x+4)=9
   +12    -4 +8
(x)(x)=17
x^2=17
x=1 or 7

Can I get brainliest please?
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