1. 1)х+1+1/4х=(4х^2+4x+1)/4x
2)x-1/4x=(4x^2-1)/4x
3)(4х^2+4x+1)/4x*4x/(4x^2-1)=(2x+1)^2/4x*4x/(2x-1)(2x+1)=(2x+1)/(2x-1)
4)(23+1)/(23-1)=24/22=12/11
3. (3x-9+2x-1)/x-2=4x+1
3x-9+2x-1=(4x+1)(x-2)
3x-9+2x-1-4x^2+8x-x+2=0]
-4x^2+12x-8=0
x^2-3x+2=0
D=9-8=1
x1=4
x2=1