a2-81=(a+)(a-)

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Solution for a2-81=(a+)(a-) equation: 



a2-81=(a+)(a-)

We move all terms to the left:

a2-81-((a+)(a-))=0

We add all the numbers together, and all the variables

a2-((+a)(+a))-81=0

We add all the numbers together, and all the variables

a^2-((+a)(+a))-81=0

We multiply parentheses ..

a^2-((+a^2))-81=0



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

(+a^2)

We get rid of parentheses

a^2

Back to the equation:

-(a^2)



We add all the numbers together, and all the variables

-81!=0

There is no solution for this equation

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