Question

Como eu faço essa conta (y-3)(y+2)-(y-1)²

Answer 1

(y-3)(y+2)-(y-1)²=0
y²+2y-3y-6-y²-2y+1=0
y²-y²+2y-2y-3y-6+1=0
0+0-3y-5=0
-3y-5=0
-3y=5
-y=5/3        x(-1)
y= -5/3