14) a) 2x²- 5x + 2 =2x²- 4x -x +2= 2x (x-2) -(x-2)=(x-2)(2x-1)
b) 3x²-2x -1=3x²-3x+x-1=3x(x-1)+(x-1)=(x-1)(3x+1)
c) 2x²+3x-2=2x²+4x-x-2=2x(x+2)-(x+2)=(x+2)(2x-1)
d) 3x²+8x-3=3x²+9x - x-3=3x(x+3)-(x+3)=(x+3)(3x-1)
e) 2x²-7x-4=2x²+8x-x-4=x(2x-1)+4(2x-1)=(2x-1)(x+4)
f) 4x²-9x+2=4x²-8x-x+2=4x(x-2)-(x-2)=(x-2)(4x-1)
