Expand and Simplify
4n(n+5)=2x(x-1)=
3(n+2)+7(2n+5)=
5(x-3)-2(x+1)=
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4n (n+5)=2x (x-1)=
= 4n^2+20n +2x^2-2
= 2n (2n+10) +2 (x^2-1)
just like this you should do
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