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प्रश्न
If one of the zeroes of the quadratic polynomial (k -1)x² + kx + 1 the value of k is ______.
पर्याय
`4/3`
`(-4)/3`
`2/3`
`(-2)/3`
MCQ
रिकाम्या जागा भरा
उत्तर
If one of the zeroes of the quadratic polynomial (k -1)x² + kx + 1 the value of k is `underline(4/3)`.
Explanation:
(k - 1)2 + kx + 1
One zero is – 3, so it must satisfy the equation and make it zero.
∴ (k - 1) (- 3)2 + k(-3) + 1 =0
⇒ 9k - 9 - Ik + 1 = 0
⇒ 6k - 8 = 0
`=> "k" = 8/6 = 4/3`
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