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Math Help - Simplify

  1. #1
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    Exclamation Simplify

    If (gx) = 2x^2 -3x, evaluate, expand and simplify completely.

    g(-2)



    g(-c)



    g(d^2)


    g(-2)
    Last edited by batman123; March 5th 2006 at 03:01 PM.
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  2. #2
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    Quote Originally Posted by batman123
    If (gx) = 2^2 -3x, evaluate, expand and simplify completely.
    g(-2)
    g(-c)
    g(d^2)
    g(-2)
    I hope you mean g(x)=2^2-3x or g(x)=4-3x

    g(-2) is just plugging in -2 for x. So we get g(-2)=4-3(-2)=16

    g(-c) is the same thing. Plug in -c for x, and see what you get.
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  3. #3
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    Quote Originally Posted by batman123
    If (gx) = 2x^2 -3x, evaluate, expand and simplify completely.
    g(-2)
    g(-c)
    g(d^2)
    g(-2)
    Hello,

    first: The last problem is the same as the first problem, so I'll not do that again.

    second: Plug in the given value for x and calculate:

    g(-2)=2 \cdot (-2)^2-3 \cdot (-2)=2 \cdot (4)+6=14
    g(-c)=2 \cdot (-c)^2-3 \cdot (-c)=2 \cdot c^2+3c
    g(d^2)=2 \cdot (d^2)^2-3 \cdot (d^2)=2 \cdot (d^4)-3d^2

    Greetings

    EB
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