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OpenStudy (anonymous):
What polynomial must be added to −7x3 + 8x − 5 so that the sum is x2 − x − 1 ?
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OpenStudy (anonymous):
add in their difference.
OpenStudy (anonymous):
i don't understand?
OpenStudy (anonymous):
What is \[(x^2 -x + 1) - (-7x^3 + 8x - 5)\]
OpenStudy (anonymous):
8x^3+7x-4
OpenStudy (anonymous):
nope :( try again
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OpenStudy (anonymous):
-6x+7x-4
OpenStudy (anonymous):
nope :(
OpenStudy (anonymous):
watch out for the exponents.
OpenStudy (anonymous):
7x^3+x^2+7x-4
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