5x2=30x-45

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Solution for 5x2=30x-45 equation: 



5x^2=30x-45

We move all terms to the left:

5x^2-(30x-45)=0

We get rid of parentheses

5x^2-30x+45=0

a = 5; b = -30; c = +45;
Δ = b2-4ac
Δ = -302-4·5·45
Δ = 0
Delta is equal to zero, so there is only one solution to the equation

                              Stosujemy wzór:
$x=\frac{-b}{2a}=\frac{30}{10}=3$

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