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15x2y2-9xy3

As x2y2 = x xy2 and xy3 = xy2 y then

xy2 is in both term you can first factorize

15x2y2-9xy3 = xy2(15x-9y)

as 15=3x5 and 9=3x3

15x2y2-9xy3 = 3xy2(5x-3y)

and that it !

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Q: How do you factorise 15x2y2-9xy3 A detailed explanation of how would be useful not ust an answer please?
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