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Math Help - Factor by grouping (don't understand it)

  1. #1
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    Factor by grouping (don't understand it)

    How would I start this question. I don't know how to do it

    FACTOR BY GROUPING:

    xy+12+4x+3y
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  2. #2
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    Quote Originally Posted by mathhelp23 View Post
    How would I start this question. I don't know how to do it

    FACTOR BY GROUPING:

    xy+12+4x+3y
    xy+12+4x+3y
    collect like terms , thing that look the same

    xy + 3y + 4x +12

    y(x+3) + 4x +12
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  3. #3
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    xy+12+4x+3y

    y(x+3) + 4x +12

    y(x+3) + 4(x+3) => (y+4)(x+3)
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  4. #4
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    Quote Originally Posted by mathhelp23 View Post
    How would I start this question. I don't know how to do it

    FACTOR BY GROUPING:

    xy+12+4x+3y
    xy+12+4x+3y

    collect like terms
    (xy+4x)+(12+3y)

    you can see from here that there are like terms in the group, then factor.

    x(y+4)+3(y+4)

    the common factor is y+4, so

    (x+3)(y+4)

    remember the rules in factorization.
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