x - x2 - 9x + 14 = 0 ; whence,
x2 + 8x = 14 ,
x2 + 8x + 16 = 30 , and
x + 4 = ±√30 .
Therefore,
x = ±√30 - 4 .
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U can subtract 18 from each side of the equation.
If: 3x+8 = 14 Then: 3x = 14-8 So: 3x = 6 Divide both sides by 3: x = 2
2
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5x-3 = 11+12x 5x-12x = 11+3 -7x = 14 x = -2