Solve for the two possible values of $x$x:

$10x^2+40x=0$10x2+40x=0

Write all solutions in fraction form, on the same line separated by commas.

Solve for $x$x:

$11x^2=7x$11x2=7x

$81x^2-64=0$81x2−64=0

Solve the equation $4x^2+8x-32=0$4x2+8x−32=0.