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    MynameisBob's Avatar
    MynameisBob Posts: 4, Reputation: 1
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    #1

    Feb 3, 2009, 12:16 AM
    Polynomial and finding variables
    ax²+bx²+2 ≡ 4x²+a-b

    Find a and b
    ebaines's Avatar
    ebaines Posts: 12,131, Reputation: 1307
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    #2

    Feb 3, 2009, 11:34 AM

    Assuming that a and b are constants, and that this equation is to be true for all values of x:

    Try grouping the coefficients of the x^2 terms together and then group the remaining terms togther. You should end up with two simple simultaneous equations for a and b.
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