a-2(a+1)a=3

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Solution for a-2(a+1)a=3 equation: 



a-2(a+1)a=3

We move all terms to the left:

a-2(a+1)a-(3)=0

We multiply parentheses

-2a^2+a-2a-3=0

We add all the numbers together, and all the variables

-2a^2-1a-3=0

a = -2; b = -1; c = -3;
Δ = b2-4ac
Δ = -12-4·(-2)·(-3)
Δ = -23
Delta is less than zero, so there is no solution for the equation

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