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geometry

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what is the value of "x" when y=0:

8x^2-x-5=y

eight times x squared minus x minus five equals y

  • geometry -

    Use the quadratic equation:

    x=(1+-sqrt(1+160))/16

    check that, I did it in my head.

  • geometry -

    do you know the anwser to the question above this one

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