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17 August, 14:13

Find the set of values of x statisfying 4x^2-12x>7

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  1. 17 August, 14:28
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    4 x2 - 12x = 7 4 x2 - 12x - 7 = 7-7 (Subtract 7 from both sides) 4 x2 - 12x - 7 = 0 (2x + 1) (2x - 7) = 0 (Factor left side of equation) 2x + 1 = 0 or 2x - 7 = 0 (Set factors equal to 0) x = - 1 / 2 or x = 7 / 2
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