5x^2-4x=-18

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Solution for 5x^2-4x=-18 equation: 



5x^2-4x=-18

We move all terms to the left:

5x^2-4x-(-18)=0

We add all the numbers together, and all the variables

5x^2-4x+18=0

a = 5; b = -4; c = +18;
Δ = b2-4ac
Δ = -42-4·5·18
Δ = -344
Delta is less than zero, so there is no solution for the equation

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