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`x^2 +x - 2 = 0.` |
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Answer» Here, a = 1, b = 1, c = -2 `:. X = (-b+-sqrt(b^2 - 4ac))/(2a) = (-1+-sqrt(1)^(2)-4xx1xx(-2))/(2xx1) = (-1+- 3)/(2) = 1 or -2 :. X =1or -2` |
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