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OpenStudy (anonymous):
Expand (2x + 5y)5.
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OpenStudy (anonymous):
32x5 - 400x4y + 2000x3y2 - 5000xy2 - 6250xy4 + 3125y5 32x5 + 400x4y + 2000x3y2 + 5000xy2 + 6250xy4 + 3125y5 32x5 + 400x4y - 2000x3y2 + 5000xy2 - 6250xy4 + 3125y5 32x5 - 400x4y - 2000x3y2 + 5000xy2 + 6250xy4 + 3125y5
OpenStudy (anonymous):
i think ur missing a "^" somewhere
OpenStudy (cwrw238):
use binomial theorem
OpenStudy (anonymous):
(2x + 5y)^5
OpenStudy (cwrw238):
hint: there can be no negatives in the expansion
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OpenStudy (anonymous):
c?
OpenStudy (cwrw238):
there are negative in c
OpenStudy (anonymous):
sorry b
OpenStudy (anonymous):
?
OpenStudy (cwrw238):
right
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OpenStudy (anonymous):
thanks!
OpenStudy (cwrw238):
yw
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