x^2-3x=-9/4

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Solution for x^2-3x=-9/4 equation: 



x^2-3x=-9/4

We move all terms to the left:

x^2-3x-(-9/4)=0

We get rid of parentheses

x^2-3x+9/4=0

We multiply all the terms by the denominator


x^2*4-3x*4+9=0

Wy multiply elements

4x^2-12x+9=0

a = 4; b = -12; c = +9;
Δ = b2-4ac
Δ = -122-4·4·9
Δ = 0
Delta is equal to zero, so there is only one solution to the equation

                              Stosujemy wzór:
$x=\frac{-b}{2a}=\frac{12}{8}=1+1/2$

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