-10-x(15+3x^2) for… - QuestionCove

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OpenStudy (anonymous):

-10-x(15+3x^2) for =-1

14 years ago

OpenStudy (anonymous):

14 years ago

OpenStudy (anonymous):

For x=-1 right

14 years ago

OpenStudy (anonymous):

yep

14 years ago

OpenStudy (anonymous):

how did you get 8

14 years ago

OpenStudy (anonymous):

-10 - (-1)(15+3(-1)^2) -10 + (15+3) =8 because -1^2=1 - (-1)=1

14 years ago

OpenStudy (anonymous):

(-1)^2 sorry the brackets are important

14 years ago

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