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a3 + b3 = ?

a3+b3 = (a+b)3-3ab(a+b) >>>This one is the formula for Expanding only...

AND

 

a3+b3 = (a+b) (a2-ab+b2) >>>This is the formula for FACTORISING....

 

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a3+b3 = (a+b)3-3ab(a+b) >>>This one is the formula for Expanding only...

a3-b3 = (a-b)3+3ab(a+b)

AND

 

a3+b3 = (a+b) (a2-ab+b2) >>>This is the formula for FACTORISING....

a3+b3 = (a-b) (a2+ab+b2)

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