Question 297684
This one can be factored too once you get it in the right form.
z=-1 and 6/5
First multiply through by 5
5z^2=z+6
5z^-z-6=0
We need factors of -30 which add up to -1
-6 and 5
5z^2-6z+5z-6=0
rearrange
5z^2+5z-6z-6
5z*(z+1)-6(z+1)=0
(5z-6)*(z+1)=0
Now the quadratic formula with the form 5z^2-x-6=0

*[invoke quadratic "z", 5, -1, -6 ]