Factorise :a³ + 3a²b + 3ab² + b² - 8
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Answered by
1
is it b sqaure or b cube
Answered by
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Hi friend,
We know that,
[a³+b³+3a²b+3ab²=(a+b)³]
So,
(a+b)³-(2)³
We know that,
[a³-b³=(a-b)(a²+ab+b²)]
So,
(a+b)³-(2)³=
[(a+b)-2][(a+b)²+(a+b)(2)+(2)²]=
(a+b-2)(a²+b²+2ab+2a+2b+4) ANSWER...
HOPE THIS HELPS YOU:-))
We know that,
[a³+b³+3a²b+3ab²=(a+b)³]
So,
(a+b)³-(2)³
We know that,
[a³-b³=(a-b)(a²+ab+b²)]
So,
(a+b)³-(2)³=
[(a+b)-2][(a+b)²+(a+b)(2)+(2)²]=
(a+b-2)(a²+b²+2ab+2a+2b+4) ANSWER...
HOPE THIS HELPS YOU:-))
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