Question

find domain & range of y=x2+x-2/x2-x-2

Answer 1

y=x2+x-2/x2-x-2
x2+x-2=x2+2x-x-2=(x-1)(x+2)
y=(x-1)(x+2)/x2-x-2
if x=0
y=-1*2/-2=1
if y = 0
0=(x-1)(x+2)
x=-2,1
range \[-2\le y \le1\]
domain \[0\le x \le 1\]