y(-2)=(-2)^2+5*(-2)-7=4-10-7=-13
y(5)=3/5-2 +4=1+4=5
y(-2)=(-2)^2-2*5-7=4-10-7=-13
y(5)=3/(5-2+4)=3/7
y(-2)=(-2)^2+5*(-2)-7=4-10-7=-13
y(5)=3/5-2 +4=1+4=5
y(-2)=(-2)^2-2*5-7=4-10-7=-13
y(5)=3/(5-2+4)=3/7