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Calculus..Need Help Soon

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If the solutions of f(x)=0 are 1 and -2, then the solutions of f(2x)=0 are

a)1 and 2
b) 1/2 and -1
c) 2 and -4
d)-2 and 4
2)-1/2 and -1

  • Calculus..Need Help Soon -

    If the solutions are 1 and -2, and assuming f(x) is a polynomial, then
    f(2x) = k(2x-1)(2x+2)
    2x-1=0 or (2x+2)=0
    Solve for x.

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