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March 29, 2017

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Multiply
(x^2 + 8x + 15) / x – 4 * (x^2 – 16) / 2x + 6

  • Algebra - ,

    x^2+8x+15 = (x+3)(x+5)

    so, you have

    (x+3)(x+5)/(x-4) * (x-4)(x+4)/2(x+3)

    the x+3 and x-4 cancel, leaving

    (x+5)(x+4)/2

  • Algebra - ,

    That really helps, thanks.

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