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6x2 + 64x - 12 = 10

∴ 6x2 + 64x - 22 = 0

∴ 3x2 + 32x - 11 = 0

∴ 3x2 + 33x - x - 11 = 0

∴ 3x(x + 11) - 1(x + 11) = 0

∴ (3x - 1)(x + 11) = 0

∴ x ∈ {1/3, -11}

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14y ago

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