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a2+14a+45=(a+5)(a+9)
We move all terms to the left:
a2+14a+45-((a+5)(a+9))=0
We add all the numbers together, and all the variables
a^2+14a-((a+5)(a+9))+45=0
We multiply parentheses ..
a^2-((+a^2+9a+5a+45))+14a+45=0
We calculate terms in parentheses: -((+a^2+9a+5a+45)), so:We add all the numbers together, and all the variables
(+a^2+9a+5a+45)
We get rid of parentheses
a^2+9a+5a+45
We add all the numbers together, and all the variables
a^2+14a+45
Back to the equation:
-(a^2+14a+45)
a^2+14a-(a^2+14a+45)+45=0
We get rid of parentheses
a^2-a^2+14a-14a-45+45=0
We add all the numbers together, and all the variables
=0
a=0/1
a=0
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