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15 January, 19:31

What are the x-intercept of the quadratic function y - x^2 + 2x - 35? a. - 1b. 7 and - 5c. - 7 and 5d. - 32 and 2

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  1. 15 January, 20:09
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    y = x^2 + 2x - 35

    x-intercept y=0

    0 = x^2 + 2x - 35

    0 = x^2 - 5x + 7x - 35 / / factoring with leading coefficient

    0 = x (x-5) + 7 (x-5)

    0 = (x+7) (x-5)

    x=-7 or x=5

    answer: C. - 7 and 5
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