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Mathematics 6 Online
OpenStudy (anonymous):

(x^3-2x^2-11x+12)/(x-1) using long division

OpenStudy (espex):

|dw:1371700373646:dw|

OpenStudy (anonymous):

how do i solve this?

OpenStudy (espex):

What single thing would you need to multiply (x-1) by to get as close as you can to the first two terms \(x^3-2x^2\)?

OpenStudy (anonymous):

1?

OpenStudy (anonymous):

no wait! x^2

OpenStudy (espex):

Right, so you have |dw:1371700812983:dw|

OpenStudy (espex):

And that should have been \(-x^2-11x\)

OpenStudy (espex):

So what about the next one, what would you do to get as close as you can to \(-x^2-11x\)?

OpenStudy (anonymous):

x!

OpenStudy (espex):

Exactly, so you want to add the next line in the drawing?

OpenStudy (anonymous):

wait let me try solve this.

OpenStudy (espex):

Not exactly, I almost forgot that it is a \(-x^2\), so if you subtract an 'x' you will get -2x

OpenStudy (anonymous):

is the answer x^2 - x - 12?

OpenStudy (espex):

That is what I got, nice work.

OpenStudy (anonymous):

thank you!!

OpenStudy (espex):

You're welcome.

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