Alg 1 quadratic equations

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I'm doing quadratic equations x^2 +bx+c =0. I know how to questions like x^2 +17x +42 =0 but this one says, j^2-9jk-10k^2. I have no clue on what I need to do

  • Alg 1 quadratic equations -

    Just include "k" in the constants:

    (j-10k)(j+k)

  • Alg 1 quadratic equations -

    I'm doing quadratic equations x^2 +bx+c =0.I'm supposed to factor each polynomial. I know how to questions like x^2 +8x +12 =0 but this one says, j^2-9jk-10k^2. I'm confused

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