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If x = 2 is a root of the quadratic equation 3x2 – px – 2 = 0, then the value of ‘p’ is

  • a)
    3

  • b)
    0

  • c)
    1

  • d)
    5

Correct answer is option 'D'. Can you explain this answer?
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If x = 2 is a root of the quadratic equation 3x2– px – 2 =...
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If x = 2 is a root of the quadratic equation 3x2– px – 2 =...
If x = 2 is a root of the quadratic equation 3x^2 - 8x + k = 0, we can substitute x = 2 into the equation and solve for k:

3(2)^2 - 8(2) + k = 0
12 - 16 + k = 0
k = 4

Therefore, the quadratic equation is 3x^2 - 8x + 4 = 0.
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If x = 2 is a root of the quadratic equation 3x2– px – 2 =...
Substitute the value of x into the equation, and keep in mind that the 3x2 is x to the power 2; 3x^2 - px - 2 = 0 3(2^2) - 2p - 2 = 0 3 (4) - 2p - 2 =0 12 - 2p - 2 = 0 2p = 10 p = 5
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If x = 2 is a root of the quadratic equation 3x2– px – 2 = 0, then the value of ‘p’ isa)3b)0c)1d)5Correct answer is option 'D'. Can you explain this answer?
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