3x(2x-1)=-21

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Solution for 3x(2x-1)=-21 equation: 



3x(2x-1)=-21

We move all terms to the left:

3x(2x-1)-(-21)=0

We add all the numbers together, and all the variables

3x(2x-1)+21=0

We multiply parentheses

6x^2-3x+21=0

a = 6; b = -3; c = +21;
Δ = b2-4ac
Δ = -32-4·6·21
Δ = -495
Delta is less than zero, so there is no solution for the equation

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