Vertex by differentiation

Q. For quadratic expression $y=37x^2+222x-51$ , extreme value lies at

1. $(-3,-273)$
2. $(3,-91)$
3. $(-3,91)$
4. $(3,273)$

Q. Critical point of the given quadratic expression $y=-13x^2+26x-19$ is at

1. $x=0$
2. $x=-1$
3. $x=1$
4. $x=-2$