find the zeroes of quadratic polynomial10x square-7x-12 and verify realtionship between the zeroes and coefficient​

Question

find the zeroes of quadratic polynomial10x square-7x-12 and verify realtionship between the zeroes and coefficient​

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Eden 4 weeks 2021-08-14T14:16:51+00:00 1 Answer 0 views 0

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    2021-08-14T14:18:03+00:00

    Answer:

    zeros are (– 4/5) and 1.5

    Step-by-step explanation:

    ax² + bx + c = 0

    x_{12} = (- b ± √D) ÷ 2a

    D = b² – 4ac

    x_{1} + x_{2}  = – \frac{b}{a}

    x_{1} × x_{2} = \frac{c}{a}

    ~~~~~~~~~~~~  

    10x² – 7x – 12 = 0

    D = (- 7)² – 4×10×(-12) = 529

    x_{12} = (7 ± 23) / 20

    x_{1} = 3/2 = 1.5

    x_{2} = – 16/20 = – 4/5

    1.5 + (- 4/5) = – (- 7/10)

    1.5 × (-4/5) = – 12/10

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