Решите. (y-2)^2-(y-2)

Question

Решите. (y-2)^2-(y-2)

Answer 1

Y²-4y+4-y+2=0
y²-5y+6=0
D=25-4*6 = 1
y1 = (5+1)/2 = 3
y2 = (5-1)/2 = 2

Answer 2

(y-2)²-(y-2)=y²-4y+4-y+2=y²-5y+6