Question

Divide
(-10x^3 +30x -20) / (-5x +5)

Answer 1

@thomaster

Answer 2

You can simplify it a little first by pulling out a factor of 10 on the top, and 5 on the bottom, then try to either factor it, or use long division

\[\Large \frac{ 10(-x^3 +3x -2)}{5(-x +1) }\]

Answer 3

but the x^3 +3x-2 doesnt factor

Answer 4

Then you'll have to use either long division, or synthetic division. Do you know how to do either of those?

Answer 5

no

Answer 6

You haven't done any polynomial long division in class??

Answer 7

im out sick alot. i must have missed it when they went over it

Answer 8

Then you might want to watch this, since if i show you how to do it, you might not follow: http://www.youtube.com/watch?v=l6_ghhd7kwQ

Or maybe try this site: http://www.mathsisfun.com/algebra/polynomials-division-long.html

Answer 9

ok

Answer 10

Once you simplify the 10/5 and distribute, you get\[\Large \frac{ 10(-x^3 +3x -2)}{5(-x +1) } = \]
\[\Large \frac{ (-2x^3 +6x -4)}{(-x +1) }\] Then set up the division like so, putting in a 0x^2 since there's no x^2 term.

Answer 11

ok :)

Answer 12

2x^2 +2x -4 is the answer i got