Simply:- (a - b)³ - (a³ - b³)
step buy step and pls
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Step-by-step explanation:
a³-b³-3a²b+3ab²-(a³-b³)
a³-b³-3a²b+3ab²-a³+b³
-3a²b+3ab²
3ab(b-a)
Answered by
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Answer:
3ab(b-a)
Step-by-step explanation:
Formula: (a-b)^3 = a^3-3ba^2+3ab^2-b^3
(a^3-b^3) = (a-b)(a^2+ab+b^2)
solution:
(a-b)^3-(a^3-b^3) = a^3-3ba^2+3ab^2-b^3-[(a-b)(a^2+ab+b^2)]
= a^3-3ba^2+3ab^2-b^3-a^3-ba^2-ab^2+ba^2+ab^2+b^3
= 3ab^2-3ba^2
= 3ab(b-a)
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