Ask Experts Questions for FREE Help !
Ask
    princess94's Avatar
    princess94 Posts: 3, Reputation: 1
    New Member
    		  
    #1

    Mar 7, 2010, 06:15 PM
    how do you factor by grouping 6v^3-16v^2+21v-56?
    How do you factor by grouping this.
    1flwrgrl's Avatar
    1flwrgrl Posts: 15, Reputation: 4
    New Member
    		  
    #2

    Mar 7, 2010, 09:10 PM

    What in the world is ^ that sign?
    KISS's Avatar
    KISS Posts: 12,510, Reputation: 839
    Uber Member
    		  
    #3

    Mar 7, 2010, 09:35 PM

    Princess means this:
    Unknown008's Avatar
    Unknown008 Posts: 8,076, Reputation: 723
    Uber Member
    		  
    #4

    Mar 8, 2010, 06:49 AM

    Well, I had some trouble with that. It's a trial and error method.

    If

    Then, if (v-a) is a factor of f(v), then f(a) = 0.

    So, you have to find the value of a for which f(a) = 0.

    I tried f(1), giving f(1) = 6(1)^3 - 16(1)^2 + 21(1) - 56 = -45.

    So, (v - 1) is not a factor.

    I won't show everything I tried, it would be a mess, but I got (v - 8/3)

    Check:



    So, (3v - 8) is a factor of f(v).

    Now, you can divide (6v^3 - 16v^2 + 21v - 56) by (3v - 8)
Not your question? Ask your question View similar questions
 

Question Tools Search this Question
Search this Question:

Advanced Search

Add your answer here.


Check out some similar questions!

Factor by Grouping [ 5 Answers ]

I understand the idea of factoring by grouping for the most part, but some of the answers in the back of the book are baffling me. Ex) 6x3 + 9x2 - 2x2 - 3x =(6x3 + 9x2) - (2x2 - 3x) =3x2(2x + 3) - 1(2x + 3) My answer: (2x + 3)(3x - 1) Book answer: x(2x + 3)(3x - 1)

Basis of Grouping of shares . [ 1 Answers ]

1.What is the basis of grouping of shares in different groups for ex. A group etc..

Lennox Pulse 21V [ 8 Answers ]

We have a 15 yr old furnace. A Harmony II thermostat for zone control A Lennox digital thermostat for the upstairs,honeywell dial type for the down. We have disconnected the zone control as per our furnace installers directions. While the upstairs digital is set for 72 the furnace...

Honda Civic automatic 1.5,16V 1992 [ 1 Answers ]

Hello can anyone help. I got Honda Civic 1992 1.5, 16V automatic today when I was driving in town the temperature start going up nearly till top so I stop the car and try to check if fan is working it works when engine is not started but when start engine the fan stops. What could be the problem?

Sears belt replacement VYT4000 21V-Twin 42" [ 1 Answers ]

Need information to replace the belt on Craftsman Riding Lawnmower. It is the Bob Villa Signature Series model #917.274033. Thanks for your help.

View more questions Search