2 x - 6*x - 14 < -x*(2*x + 5)
x^2 - 6*x - 14 < (-x)*(2*x + 5)
And(-2 < x, x < 7/3)
(-2 < x)∧(x < 7/3)
(-2, 7/3)
x in Interval.open(-2, 7/3)