3x^2=21x-45

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Solution for 3x^2=21x-45 equation: 



3x^2=21x-45

We move all terms to the left:

3x^2-(21x-45)=0

We get rid of parentheses

3x^2-21x+45=0

a = 3; b = -21; c = +45;
Δ = b2-4ac
Δ = -212-4·3·45
Δ = -99
Delta is less than zero, so there is no solution for the equation

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