x^2 + 7x + 6 <= 6 x^2 + 7x <= 0 || Subtract 6 from the two factors x(x+7) <= 0 So there you circulate. build your indicators table, and calculate that. x^2 + 7x + 6 could be factored (x + 6)(x + a million), yet you do no longer choose for the zeroes of that - you elect for to get the <= 6 area. consequently, you could subtract 6 from the two factors. that's the step you're lacking.