-((4x + 1)(x - 1))
(2x + 3)(2x + 3)
4x2 plus 3=11
5x is a common factor of all terms:- 5x(x3+4x2+9)
If you can't factor it easily, use the quadratic formula.
y=4x2+3x+8
4x2+20x+25 (2x+5)^2
The expression is likely 4x2 - 36x +81 which is the same as (2x - 9)(2x - 9) or (2x - 9)2
x3 + 4x2 + x + 4 = (x + 4)(x2 + 1)
4x2+49x+90 = (4x+9)(x+10) when factored
The quadratic 4x2+24x+11 = (2x+1)(2x+11)
There are four solutions to 9x4 plus 27x3 - 4x2 - 12x equals 0. One of the solutions is x = -3.