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OpenStudy (anonymous):
what is the value of 2x^3+4x^2+4x=8 when x=15
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OpenStudy (anonymous):
First we have to plug it in. So it would be 2(15)^3+4(15)^2=8
OpenStudy (anonymous):
Plug the 15 into anywhere in the equation where you see x, from there it is just a solving problem.
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