2x(2x+1)=5x-4

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Solution for 2x(2x+1)=5x-4 equation: 



2x(2x+1)=5x-4

We move all terms to the left:

2x(2x+1)-(5x-4)=0

We multiply parentheses

4x^2+2x-(5x-4)=0

We get rid of parentheses

4x^2+2x-5x+4=0

We add all the numbers together, and all the variables

4x^2-3x+4=0

a = 4; b = -3; c = +4;
Δ = b2-4ac
Δ = -32-4·4·4
Δ = -55
Delta is less than zero, so there is no solution for the equation

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