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(5a+2)(2a+2)-(3a-7)(a+6)=0
We multiply parentheses ..
(+10a^2+10a+4a+4)-(3a-7)(a+6)=0
We get rid of parentheses
10a^2+10a+4a-(3a-7)(a+6)+4=0
We multiply parentheses ..
10a^2-(+3a^2+18a-7a-42)+10a+4a+4=0
We add all the numbers together, and all the variables
10a^2-(+3a^2+18a-7a-42)+14a+4=0
We get rid of parentheses
10a^2-3a^2-18a+7a+14a+42+4=0
We add all the numbers together, and all the variables
7a^2+3a+46=0
a = 7; b = 3; c = +46;
Δ = b2-4ac
Δ = 32-4·7·46
Δ = -1279
Delta is less than zero, so there is no solution for the equation
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