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Thread: Math help? plz...! +rep

  1. #1
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    Math help? plz...! +rep

    Help please? Some homework...

    1.) a5+a3-a2-1

    2.) 2x2-5xy+3y2

    3.) a2+ab+ac+ab
    _________________
    b2+ab+bc+ac

    I've asked for help in class, the teacher just ignored, so anyone?

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    wat r the instructions? o.o

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    Indeed, we can't help you if you don't tell us what the instructions are xD

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    do you wanna like...factor them?


    for example #3 would be like (a + c)(a + b)

    or...evaluate? or... what o.o

    without instructions my guess for everything is

    1) idunnowatdisis

    2) (2x + y) (x - 3y) ~ oh wait scratch that you get -3y^2 not +3y^2. wadaheck. you cant factor it. are you sure it isnt -3y^2 instead of +3y^2 at the end?

    3) (a + c)(a + b)

    4) (b + c)(b + a)


    XDDD
    Last edited by whatareyoudoingomgSTOP; 02-15-2012 at 05:07 PM.

  5. The Following User Says Thank You to whatareyoudoingomgSTOP For This Useful Post:

    Mike (02-15-2012)

  6. #5
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    I'll guess that you have to factor:
    1)a5+a3-a2-1=a3(a2+1)-1(a2+1) = (a3-1)(a2+1)=(a-1)(a2+a+1)(a2+1)
    2) 2x2-5xy+3y2=(2x+3y)(x+y)
    3) a2+ab+ac+ab=a2+2ab+ac= a(a+2b+c)
    b2+ab+bc+ac = b2+bc+ab+ac=b(b+c)+a(b+c)=(a+b)(b+c)

  7. The Following User Says Thank You to bamag For This Useful Post:

    Mike (02-15-2012)

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    Oops, one sec xD My bad, totally forgot, lemme get 'em... Gotta translate from Portuguese to English... FML

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