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ii)answer knowing..
(a+b)^2=a^2+2ab+b^2
a^2+2ab+b^2=a^2+2ab+b^2(is verified)
v)answer knowing..
(a+b)^3=a^3+3a^2b+3ab^2+b^3
a^3+b^3+3ab(a+b)=a^3+3a^2b+3ab^2+b^3.
a^3+b^3+3a^2b+3ab^2=a^3+3a^2b+3ab^2+b^3.(is verified)
(a+b)^2=a^2+2ab+b^2
a^2+2ab+b^2=a^2+2ab+b^2(is verified)
v)answer knowing..
(a+b)^3=a^3+3a^2b+3ab^2+b^3
a^3+b^3+3ab(a+b)=a^3+3a^2b+3ab^2+b^3.
a^3+b^3+3a^2b+3ab^2=a^3+3a^2b+3ab^2+b^3.(is verified)
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