pita8 pita8
  • 27-04-2017
  • Mathematics
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Answer for number 3

Answer for number 3 class=

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liemonder liemonder
  • 27-04-2017
36x^2-49
this closely matches the binomial formula of (a+b)*(a-b)=a^2-b^2
so we know:
a^2=36x^2
a=6x

b^2=49
b=7

so (a+b)*(a-b)=(6x+7)*(6x-7)=36x^2-49
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