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Mathematics 20 Online
OpenStudy (anonymous):

Help factoring polynomials? WILL MEDAL AND FAN!! 2x^3 - 12x^2 + 18 - 3x

OpenStudy (anonymous):

-15X?

OpenStudy (anonymous):

But would you also add the 3 and 2 exponents?

OpenStudy (anonymous):

not add the exponents multiply

OpenStudy (anonymous):

@JuliaShepherd have you ever learned about? P.E.M.D.A.S.? use that method and you will get the answer

OpenStudy (anonymous):

So 15x^6? Then what?

jimthompson5910 (jim_thompson5910):

you can't combine `- 12x^2` with `- 3x` they aren't like terms

OpenStudy (neonumbrella5115):

I misread the problem @jim_thompson5910

jimthompson5910 (jim_thompson5910):

2x^3 - 12x^2 + 18 - 3x 2x^3 - 12x^2 - 3x + 18 ... swap the last two terms (2x^3 - 12x^2) + ( - 3x + 18) ... pair up the terms into 2 groups Do you see what to do next?

OpenStudy (anonymous):

So how do I do it?

OpenStudy (anonymous):

alright @jim_thompson5910 's got this ill leave it to him/her

OpenStudy (anonymous):

Why do you swap the terms?

jimthompson5910 (jim_thompson5910):

because I'm putting the terms in order of decreasing exponent

jimthompson5910 (jim_thompson5910):

2x^3 - 12x^2 - 3x + 18 is the same as 2x^3 - 12x^2 - 3x^1 + 18x^0 the exponents in order, from left to right, are: 3, 2, 1, 0

OpenStudy (anonymous):

Okay. First you look for a GCF?

OpenStudy (anonymous):

There isn't one....

jimthompson5910 (jim_thompson5910):

what's the GCF of this first group `(2x^3 - 12x^2) ` ?

OpenStudy (anonymous):

2x^2

jimthompson5910 (jim_thompson5910):

so factor out 2x^2 to get 2x^3 - 12x^2 = 2x^2(________) fill in the blank

OpenStudy (anonymous):

x-6x

jimthompson5910 (jim_thompson5910):

not quite

OpenStudy (anonymous):

what is it?

jimthompson5910 (jim_thompson5910):

|dw:1452657424623:dw|

jimthompson5910 (jim_thompson5910):

|dw:1452657444357:dw|

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