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Mathematics 20 Online
OpenStudy (anonymous):

factorise 36a^3b - 4ab^3 I got ab(6a+2b)(6a-2b)

OpenStudy (anonymous):

That is the answer although it is still incomplete. We can factorise further by leaving 2 outside from each bracket. Thus, the correct solution is \[ 4ab(3a+b)(3a-b) \]

OpenStudy (anonymous):

great thanks.

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