(12a^2+13a+7)+(9a^2+15a+8)=0

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Solution for (12a^2+13a+7)+(9a^2+15a+8)=0 equation: 



(12a^2+13a+7)+(9a^2+15a+8)=0

We get rid of parentheses

12a^2+9a^2+13a+15a+7+8=0

We add all the numbers together, and all the variables

21a^2+28a+15=0

a = 21; b = 28; c = +15;
Δ = b2-4ac
Δ = 282-4·21·15
Δ = -476
Delta is less than zero, so there is no solution for the equation

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