How do i factor 15AsquaredBcubed+10AsquaredBsquared-5ABcubed?

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- Jul 20th 2008, 11:51 AMeuclid2factoring
How do i factor 15AsquaredBcubed+10AsquaredBsquared-5ABcubed?

- Jul 20th 2008, 03:05 PMMatt Westwood

In each bit you can divide by 5 without leaving any remainder.

You can also see there's an in each bit.

Also, there's a in each bit. In fact, there's at least 2 's in each bit.

So you can extract a 5, an and two 's.

This gives, for each bit:

So putting it all together we get:

. - Jul 21st 2008, 06:16 AMtutor
Hi,

=15A^2B^3+10A^2B^2-5AB^3

t taking common of 5AB^2

=5AB^2(3AB+2A-B) is the answer(Rofl)