Simplify: 4x2−12x2−5x+2\frac{4x^2 - 1}{2x^2 - 5x + 2}2x2−5x+24x2−1
2x+12x−1\frac{2x+1}{2x-1}2x−12x+1
2x+1x−2\frac{2x+1}{x-2}x−22x+1
4x−12x\frac{4x-1}{2x}2x4x−1
2x−12x - 12x−1