9. If 2 is a zero of the Polynomial P(x)=2x²-3x-7a find the value of “a” ? ​

Question

9. If 2 is a zero of the Polynomial P(x)=2x²-3x-7a find the value of “a” ?

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Luna 2 months 2021-10-10T12:25:53+00:00 2 Answers 0 views 0

Answers ( )

    0
    2021-10-10T12:27:09+00:00

    Answer:

    \huge{\fcolorbox{brown}{lightblue}{Answer:}}

    Given that 2 is a zero of

    p(x) = 2x²-3x±7a

    (i. e) p(2) = 0

    ⟹2(2)²-3(2) ± 7a = 0

    ⟹8-6±7a = 0

    ⟹2±7a = 0

    ⟹7a = -2

    ⟹a=-2/7

    0
    2021-10-10T12:27:35+00:00

    Answer:

    p(x) = 2x² – 3x – 7a

    p(2) = 2(2)² – 3(2) – 7a = 0

    2(4) – 6 – 7a = 0

    8 – 6 – 7a = 0

    2 – 7a = 0

    – 7a = -2

    a = -2/-7

    a = 2/7 Ans

    Step-by-step explanation:

    hope this helpful……….

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