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How do you solve the equation u^2-8=7u by factoring?

How do you solve the equation u^2-8=7u by factoring?
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How do you solve the equation u^2-8=7u by factoring?

User Mknaf
by
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1 Answer

3 votes

u^2-8=7u

u^2-7u-8=0

u^2-8u+u-8=0

u(u-8)+(u-8)=0

(u-8)(u+1)=0

\boxed{u=8\lor u=-1}
User Kbirk
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