r2-8r+16=(r-)(r-)

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Solution for r2-8r+16=(r-)(r-) equation: 



r2-8r+16=(r-)(r-)

We move all terms to the left:

r2-8r+16-((r-)(r-))=0

We add all the numbers together, and all the variables

r2-8r-((+r)(+r))+16=0

We add all the numbers together, and all the variables

r^2-8r-((+r)(+r))+16=0

We multiply parentheses ..

r^2-((+r^2))-8r+16=0



We calculate terms in parentheses: -((+r^2)), so:

(+r^2)

We get rid of parentheses

r^2

Back to the equation:

-(r^2)



We add all the numbers together, and all the variables

-8r+16=0

We move all terms containing r to the left, all other terms to the right

-8r=-16

r=-16/-8

r=+2

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