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Mathematics 22 Online
OpenStudy (anonymous):

whats the answer -9a^2(-4a^2+3a+4)

OpenStudy (anonymous):

I think u can do this....

OpenStudy (anonymous):

The first term is -9a^2*-4a^2 = 36a^4....

OpenStudy (anonymous):

Stuck? The second one is -9a^2*3a = -27a^3

OpenStudy (anonymous):

yes

OpenStudy (anonymous):

Ok, the third one is -36 a^2 so putting 3 together is 36a^4-27a^3-36 a^2

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