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Mathematics 21 Online
OpenStudy (anonymous):

My answer is b, guys! ;) Approximate the real number solution(s) to the polynomial function f(x) = x3 + 2x2 - 5x - 6 . (1 points) Answer x = -3, x = -1, x = 2 x = 3, x = 1, x = -2 x = 3, x = -1, x = 2 x = -3, x = 1, x = -2

OpenStudy (ash2326):

@InsanelyChaotic Could you check if x=3 is a solution ?

OpenStudy (anonymous):

sure!

OpenStudy (anonymous):

I found that it isn't one

OpenStudy (ash2326):

Yeah. If it has to be a solution it should satisfy f(x)=0 Check each of the options again, would you ?

OpenStudy (anonymous):

alright, one moment :)

OpenStudy (ash2326):

sure :)

OpenStudy (anonymous):

It's either A or D

OpenStudy (anonymous):

both of which include negatives

OpenStudy (ash2326):

Yeah but we have to find 3 solutions for f(x)=0 so check if x=-1 or x=1 is a solution, that'll let us know the correct option

OpenStudy (anonymous):

A

OpenStudy (anonymous):

thanks for your help ill be back!!

OpenStudy (ash2326):

Now just to make sure we are correct, check the third solution of option A

OpenStudy (anonymous):

I don't know if it's right or not

OpenStudy (ash2326):

check x=2, I'm sure it'll be right. We are just doing a check

OpenStudy (anonymous):

it's final answer or nothing

OpenStudy (anonymous):

we're hardcore about it hahaha ;(

OpenStudy (ash2326):

Just check it, you'll get to know

OpenStudy (anonymous):

alright pal

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