How do you factor 3cd – 6cy + 2xd – 4xy?

1 Answer
Mar 23, 2016

(d-2y)(3c+2x)

Explanation:

It is a matter of spotting the grouping and perhaps a bit of experimenting

3c(d-2y)+2x(d-2y)" " I struck lucky first time

The common factor is (d-2y) so we have

(d-2y)(3c+2x)

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Check:" "(d-2y)(3c+2x) =3dc+2xd-6yc-4yx" " It matches so ok!