Find the four second partial derivatives.

z $=3$x$2+$ y$6$

$2$z

$$x$2$

$=$

Correct: Your answer is correct.

$2$z

$$x$$y

$=$

Correct: Your answer is correct.

$2$z

$$y$$x

$=$

Correct: Your answer is correct.

$2$z

$$y$2$

$=$