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4x+12-5x-30=-x-18
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The derivative of 2x2 + 4x + 8 is 4x+4.
3x + (-2 + 4x) = -2 + 7x
4x+8x+3 = 12x+3
-5x + x + 9 = -4x + 12 -4x + 9 = -4x + 12 9 = 12 This equation has no solution.
x = -½