Question

(2z-7z+3)/(2z+1)-1+z=0

Answer 1

(3-5z)/(2z+1)-1+z=0
z≠-0,5
3-5z-2z-1+2z²+z=0
2z²-6z+2=0
z²-3z+1=0
D=9-4=5
z1=(3-√5)/2
z2=(3+√5)/2