For what value of k, x² - kx + 3 will be exactly divisible by x - 1?
- 3
- 4
- 2
- None of these
Explanation
If x - 1 is a factor of x² - kx + 3, then substituting x = 1 should make the expression zero.
Substituting x = 1 in x² - kx + 3 = 0 gives:
(1)² - k(1) + 3 = 0 ⟹ 1 - k + 3 = 0 ⟹ k = 4.
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اس سوال کو وضاحت کے ساتھ پڑھیں
- (t² + 4)(t - 2)(t - 2)
- (t² - 4)(t² - 4)
- (t² + 4)(t + 2)(t - 2)
- None of these
اس سوال کو وضاحت کے ساتھ پڑھیں
- +4
- -4
- +16
- None of these
اس سوال کو وضاحت کے ساتھ پڑھیں
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