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If alpha, beta are the two zeroes of a polynomial x-5x + 6. then the value of 1/alpha square + 1/ beta square is |
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Answer» Answer: x^2 -5X +6 gives a + b = -(-5/1) = 5 and AB= (6/1) =6 (1/a^2) + (1/b^2) = {(1/a) + (1/b)}^2 - 2(1/a)(1/b) = {(a+b)/ab}^2 - 2/(ab) = {(5)/6}^2 - 2/6 =25/36 - 2/6 = (25-12)/36 = 13/36 Ans |
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