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Mathematics 19 Online
OpenStudy (anonymous):

-5x^5(9x^4-3) is it -45x^9+15x

OpenStudy (goldphenoix):

Not quite, I believe.

OpenStudy (goldphenoix):

\[\large \large -5x^5(9x^4-3)\] -5x^5 * 9x^4 does give us -45x^9. Though, -5x^5 * -3 = 15x ? Are you sure?

OpenStudy (anonymous):

15x^6 ?

OpenStudy (anonymous):

or 15x^5

OpenStudy (goldphenoix):

15x^5*

OpenStudy (goldphenoix):

So your final answer would be?

OpenStudy (anonymous):

-45x^9+15x^5

OpenStudy (goldphenoix):

Correct! :) I hope this help!

OpenStudy (anonymous):

8w^2(5w^3-5w+5) is it 40w^5-40w^3+40w^2 @GoldPhenoix

OpenStudy (goldphenoix):

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