Question

factorise these two​

Answer 1

a ) (a+b) ^3 - ( a+b )

= ( a+ b)- (a+b ) ^2

= ( a+b ) ( a^2 + 2ab + b^2 -1 )

b ) a^2 (b+c) - (b+c)^2

= a^2 ( b+c ) -1 ( b^2 + 2bc+ c ^2 )

a^2 (b+c) (b^2 + 2bc + c^2 -1)

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