66 factored to get -1 = 65
72
It is (x-1)(x-1) when factored
x2 + 1 can't be factored in the real numbers. If complex numbers are acceptable, it can be factored as (x + i)(x - i).
6x2+5x+1 = (3x+1)(2x+1) when factored
If you mean (1+2x)2, that is already factored.
It is (x-1)(x-8) when factored
It is (A-1)(A+1) when factored
If you mean: 2x2-11x+5 then it is (2x-1)(x-5) when factored
1/4 of all numbers are factored by 4 and 1/6 of all numbers are factored by 6
6x2-17x+7 = (2x-1)(3x-7) when factored
If you mean: x2+3x+2 then it is (x+1)(x+2) when factored
It is 66:1 or 66/1.