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math

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how do i factor this
y=x to the power of 2 -2x-5?

thanks in advance!

  • math - ,

    y = x^2 - 2 x - 5

    That can not be factored with whole numbers

    try solving quadratic
    [ 2 +/- sqrt (4+20) ] /2

    = 1 +/- sqrt(6)
    so try
    (x - 1+sqrt6)(x - 1-sqrt(6))

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