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Solve for z
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z^{2}+10z+16=z^{2}+8z
Use the distributive property to multiply z+8 by z.
z^{2}+10z+16-z^{2}=8z
Subtract z^{2} from both sides.
10z+16=8z
Combine z^{2} and -z^{2} to get 0.
10z+16-8z=0
Subtract 8z from both sides.
2z+16=0
Combine 10z and -8z to get 2z.
2z=-16
Subtract 16 from both sides. Anything subtracted from zero gives its negation.
z=\frac{-16}{2}
Divide both sides by 2.
z=-8
Divide -16 by 2 to get -8.