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Can someone Help me with maths?

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  • 25-02-2009 8:08pm
    #1
    Les_Rebels123
    Registered Users Posts: 52 ✭✭


    Can anyone please do the equation for me? pleaseeee

    By factorising the Numerator and denominator, simplify

    (A)
    3x^2-11x+6
    3x^2+10x-8


    thanks, need fast answer pleaseeeee :D:D:pac::)

    ^=power of


Comments

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    #2
    BlindedByGInge
    Closed Accounts Posts: 53 ✭✭BlindedByGInge


    Just factorise the top and bottom separatly.

    Top (3x-2)(x+3)

    Bottom (3x-2)(x+4)

    The 2 (3x-2)'s cancel leaving
    (x+3)
    (x+4)


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    #3
    challengemaster
    Registered Users Posts: 16,930 ✭✭✭✭challengemaster


    I think you mean (3x-2)(x-3) on top


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    #4
    BlindedByGInge
    Closed Accounts Posts: 53 ✭✭BlindedByGInge


    challengemaster wrote: »
    I think you mean (3x-2)(x-3) on top


    Oops ya good point, darn minuses


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    #5
    Elonex
    Closed Accounts Posts: 129 ✭✭Elonex


    What does ^ mean?:confused:


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    #6
    Les_Rebels123
    Registered Users Posts: 52 ✭✭Les_Rebels123


    yeah....good point,,,shoulda said ^=power of: so 3x^2=3x to the power of 2


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    #7
    Les_Rebels123
    Registered Users Posts: 52 ✭✭Les_Rebels123


    thanks :P

    i tried this one and i dont think im right.

    x^2-5xy+6y^2
    x^2-4y^2


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    #8
    challengemaster
    Registered Users Posts: 16,930 ✭✭✭✭challengemaster


    Les_Rebels123 wrote: »
    thanks :P

    i tried this one and i dont think im right.

    x^2-5xy+6y^2
    x^2-4y^2

    Took me a min or two to figure that one :D

    After factorising, you get:

    (x-3y)(x-2y)
    (x+2y)(x-2y)

    Then the two (x-2y)'s cancel to leave:
    (x-3y)
    (x+2y)


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