-x2+2x
It is: 4x squared
2x2 + 2x = 2x(x+1)
4
7x2 -4x -5x2 +2x = 2x2 -2x
(2x+3)(2x+4)
(2x+3)(x+3)
(x + 1)(2x + 5)
(2x + 1)(x + 2)
(2x+10)(x+4)
Yes it is. The thing that makes it a quadratic equation is that "x squared" in there.
(5x 2 - 8x + 1) + (2x 2 - 4x - 11)