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OpenStudy (anonymous):
factorise 4xy-8y^2, I answered 2(2xy-4y^2) why was I wrong?
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OpenStudy (anonymous):
need to factor the 'y' out as well
OpenStudy (anonymous):
you can take 4y out 4y (x - 2y)
OpenStudy (anonymous):
the GCF (greatest common factor) of the two terms is 4y
OpenStudy (anonymous):
oh yes so (2x-4y) still share a 2 in common pull it out 2y*2 is 4y and ull end up with 4y(x-2y)
OpenStudy (anonymous):
so look out for the GCF.
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OpenStudy (anonymous):
Brillant Thank you guys
OpenStudy (anonymous):
yes. mainly
OpenStudy (anonymous):
mainly????? do not like the sound of that.
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