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algebra 2

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find the number of zeros(x-intercept) y=a^2+a-56 show the step please.

  • algebra 2 - ,

    Factor
    What factors multiply to equal 56 and subtract to
    equal 1?

  • algebra 2 - ,

    -7.8

  • algebra 2 - ,

    Yes
    (X-7)(x+8)
    Check by foiling
    X^2 +8x -7x -56
    X^2 +x -56

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