what is formula of a^{3}+b^{3 }

a^{3}+b^{3} = (a+b)^{3}-3ab(a+b)

please explain how a^{3}+b^{3}= (a+b)(a^{2}-ab+b^{2}) and

a^{3}-b^{3}= (a-b)(a^{2}+ab+b^{2})

a3+b3= (a+b)(a2+b2-ab)

a^{3}+b^{3}=(a+b)(a^{2}+b^{2}-ab)

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3a+3b+3ab(a+b)

a^{3} - b^{3 } = (a-b) (a^{ 2 }+ab+b^{2}) (multiply these to expression)

=a^{3}+a^{2}b+ab^{2}-a^{ 2 }b+ab^{2}-b^{3} (+a^{2}b-a^{ 2 }b=0 +ab^{2}+ab^{2}= 0 )^{ }

=a^{3}-b^{3}

a^3+b^3=(a+b)(a^2-ab+b^2)

a^{3}-b^{3} = (a-b)^{3}+3ab(a+b)

AND

a^{3}+b^{3} = (a+b) (a^{2}-ab+b^{2}) >>>This is the formula for FACTORISING....

a^{3}+b^{3} = (a-b) (a^{2}+ab+b^{2})

a3+b3+3ab(a+b)

(a+b) ( a^{2} - ab - b^{2})

a^{3}+b^{3}=(a+b)(a^{2}-ab+b^{2})

please explain in brief of formula a3+b3 and a3-b3

plzzz ans. this ques.

a3 + b3 = (a+b) (a2+ b2 -ab)

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