Solve for z
z=12
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z^{2}+z-6=z^{2}+6
Use the distributive property to multiply z-2 by z+3 and combine like terms.
z^{2}+z-6-z^{2}=6
Subtract z^{2} from both sides.
z-6=6
Combine z^{2} and -z^{2} to get 0.
z=6+6
Add 6 to both sides.
z=12
Add 6 and 6 to get 12.
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