21x-7+57=14x-3x2

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Solution for 21x-7+57=14x-3x2 equation: 



21x-7+57=14x-3x^2

We move all terms to the left:

21x-7+57-(14x-3x^2)=0

We add all the numbers together, and all the variables

-(14x-3x^2)+21x+50=0

We get rid of parentheses

3x^2-14x+21x+50=0

We add all the numbers together, and all the variables

3x^2+7x+50=0

a = 3; b = 7; c = +50;
Δ = b2-4ac
Δ = 72-4·3·50
Δ = -551
Delta is less than zero, so there is no solution for the equation

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