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Consider the polynomials\[f(x)=1-12x+3x^2-4x^3+5x^4\]and\[g(x)=3-2x-6x^3+9x^4.\]Find $c$ such that the polynomial $f(x)+cg(x)$ has degree 3. Thanks!!!

 Mar 18, 2021
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The correct value of c is -2.

 Mar 18, 2021

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