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sergey [27]
3 years ago
11

Answer for number 3

Mathematics
1 answer:
julia-pushkina [17]3 years ago
4 0
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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