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OpenStudy (anonymous):
3x^3 - 9xy - 4pq^2-2p^2q please help
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OpenStudy (lilg132):
3x(x^2 - 3y) 2pq(-2q - p)
OpenStudy (lilg132):
expand the brackets to check it is correct 3x * x^2 = 3x^3 3x * -3y = -9xy 2pq * -2q = -4pq^2 2pq * -p = -2p^2q so you should have 3x^3 - 9xy - 4pq^2 - 2p^2q
OpenStudy (anonymous):
thanks
OpenStudy (lilg132):
your welcome
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