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OpenStudy (anonymous):
-5x^3+9x@-5x-2 evaluate polynomial for x=-1
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OpenStudy (anonymous):
is the @ sign a typo?
OpenStudy (anonymous):
\[-5x^3+9x^2-5x-2\] replace x by -1 and use parentheses to get \[-5(-1)^3+9(-1)^2-5(-1)-2\]
OpenStudy (anonymous):
i get \[5+9+5-2=17\]
OpenStudy (anonymous):
yes the @ is a typo it's supposed to be -5x^3+9x^2-5x-2
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