$$\left. \begin{array} { l } { y = x ^ { 2 } - 1 , y = 1 , 4 = 5 , 40 = 0 , 000 } \\ { = \frac { 9 x + 1 , 6 x = 15 , 40000 } { 9000 } = 0 , 000 } \\ { = 80 , 00 = 0 , 0 \right.$$
$y=x^{2}-1,\ y=1,\ \text{false},\ \text{false},\ \text{true},\ z=0,\ a=80,\ b=0$
