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Mathematics 24 Online
OpenStudy (ineedhelp10):

need someone to go over my answer

OpenStudy (ineedhelp10):

What is the value of the expression 2x^3-x^2+3x+5 for x=-2

OpenStudy (anonymous):

and your answer?

OpenStudy (ineedhelp10):

I got -21

OpenStudy (trr54):

I got -13...

OpenStudy (ineedhelp10):

Huh 😯 we got different answers

OpenStudy (anonymous):

-13 too

OpenStudy (trr54):

@ineedhelp10,what did u get when u did 2x^3?

OpenStudy (trr54):

Wait! U did it right! It's -21

OpenStudy (trr54):

I forgot to multiply the two bck in

OpenStudy (ineedhelp10):

But @OrthodoxMan got -13 also tho

OpenStudy (anonymous):

2(-2)^3 - (-2)^2 + 3(-2) +5 = 2(-8) - (4) -6 +5 = -16-4-6+5 = -21

OpenStudy (trr54):

He made the same mistake as me... Be proud u did a good job! :)

OpenStudy (ineedhelp10):

awh thank you so much guys!

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