pita8
pita8
27-04-2017
Mathematics
contestada
Answer for number 3
Respuesta :
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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