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Let a, b, c, d in R. If the equations 2bx^(2) + 3c x - d = 0 and 2ax^(2) + 3bx + 4c = 0 have a common root and (4bc + ad)/(k(b^(2) - ac)) = (bd + 4c^(2))/(4bc + ad'), then k = |
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Answer» `(9)/(2)` |
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