simplify 27 y cube + 125 Z cube
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27y^3 + 125 z^3
(3y)^3 +( 5z)^3
by using identity
(3y)^3 +(5z)^3= (3y+5z) ((3y)^2 +(5z)^2 -3y×5z)
=(3y + 5z)(9y^2 +25z^2 -15yz)
(3y)^3 +( 5z)^3
by using identity
(3y)^3 +(5z)^3= (3y+5z) ((3y)^2 +(5z)^2 -3y×5z)
=(3y + 5z)(9y^2 +25z^2 -15yz)
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