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SECTION-AQuestion numbers 1 to 6 carry 1 mark each.I. lfr-3 is one root of the quadratic equation x2-2kx-6 = 0, then find the valueof k. |
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Answer» Given,x = 3 is root of Quadratic eqn. x² - 2kx - 6 Thus, (3)² - 2k× 3 - 6 = 0 ⇒ 9 - 6k - 6 = 0 ⇒ 3 - 6k = 0 ⇒ 6k = 3 ⇒ k = 3/6 = 1/2 |
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