# math,help,factoring

i need help i don't know how to do the next step.

factor by grouping

x^3-3x^2+4x-12

so what i have so far is this

=(x^3-3x^2)+(4x-12)
=x(x^2-3x)+4(x-3)
from here i don't know...

and then this one is driving me insane this next one...

Rewrite the middle term as the sum of two terms and then factor by grouping.

x^2-14x+45

i'd figure out problem #1
these are the steps I did:
factor by grouping

x^3-3x^2+4x-12

so what i have so far is this

=(x^3-3x^2)+(4x-12)
=x^2(x-3)+4(x-3)
= (x-3)(x^2+4)

I AM STILL HAVING TROUBLE WITH PROBLEM NUMBER 2

wouldnt it be-
(x-5)(x-9)

You have to find 2 numbers to multiply to bed 45 BUT add to be negative 14.

yes,thank you......

1. 👍 0
2. 👎 0
3. 👁 128

## Similar Questions

1. ### Algebra 1--Step-by-Step

Can someone show me how to solve these step-by-step? Please? Thank you. Factor each polynomial by grouping. Check your answer. 1. 2r^2 - 6r + 12 - 4r 2. 14q^2 - 21q + 6 - 4q 3. w^3 -4w^2 + w - 4 4. 2p^3 - 6p^2 + 15 - 5p

asked by Anonymous on March 1, 2014
2. ### math,help

Can someone show me how step by step how to solve this problem... Rewrite the middle term as the sum of two terms and then factor by grouping. x^2-2x-63 step 1. Find two factors which when multiplied will give you -63 and when

asked by jas20 on March 2, 2007
3. ### FACTORING

I can't figure out how to factor this. I know you use the technique Factor by Grouping. But can someone explain to me how to factor this problem by using factor by grouping technique. Problem: 30x^3 + 18x^2 - 5x - 3. Thanks so

asked by Miley on January 30, 2008
4. ### Algebra

I am trying to factor polynomials by grouping the first two terms and the last two terms, but I am having some issues, I have done a few correct since I can look at the answers to the odd problems but it is taking me arund 25

asked by Ragan on July 27, 2007
5. ### math,help

how can i factor this out completly x^4+x^3-12 i know that4*-3=-12 but how can i get that middle term x^2*x^2=x^4 first you cannot take out any GCF. so if you decide to use grouping, you can create an equivalent problem: x^4 + x^3

asked by jasmine20 on April 20, 2007
6. ### Math

Factor: 50 (2x-5)^2 -162 (3y-2)^2 I'm not even sure how to do this. I've tried it for so long and I've been trying multiple ways. I don't know how to factor these. May I get a step to step explanation or work please?

asked by Sarah on September 16, 2017
7. ### algebra 2

f(x) =x^4 - x^3 -4x^2 +4. find factor and graph. I only factor to this step: (x^3 - 4x-4)(x-1) = f(x) but i don't know how to continue this step to require factor more completely and graph it. Please help. this is algebra 2. Thank

asked by Anonymous on December 10, 2015

asked by margie on January 23, 2007
9. ### Maths

Differentiate y=(5x-2)^3(3-x)^6 using the product rule. i don't get the step where they find the common factor could you help me by doing it step by step please ? thank you!

asked by Karoline on November 21, 2009
10. ### factoring

how to factor x^4 - 2x^3 - 8x + 16 Thanks. you can factor by grouping wich is to divide the equation into two pieces 1)x^4-2x^3 -8x+16 2)now factor this two x^3(x-2)-8(x-2) 3)you will get x^3-8 and x-2 4)factor x^3-8

asked by Jen on January 31, 2007

More Similar Questions