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Factor 15x ^2 −42xy+24y^2
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37 votes
37 votes
Factor 15x ^2 −42xy+24y^2

User Ana Ban
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1 Answer

13 votes
13 votes
Take a factor of 3 out
3(5x^2 - 14xy + 8y^2)
Try to factoring inside the bracket
5X8=40
Factors of 40 that add to -14 are -10 and -4
5x^2-10xy-4xy+8y^2
5x(x-2y) -4y(x-2y)
(x-2y)(5x-4y)
cant forget the 3
3(x-2y)(5x-4y)
User TheLazyChap
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