4.5=-0.5x^2+x+4

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Solution for 4.5=-0.5x^2+x+4 equation: 



4.5=-0.5x^2+x+4

We move all terms to the left:

4.5-(-0.5x^2+x+4)=0

We get rid of parentheses

0.5x^2-x-4+4.5=0

We add all the numbers together, and all the variables

0.5x^2-1x+0.5=0

a = 0.5; b = -1; c = +0.5;
Δ = b2-4ac
Δ = -12-4·0.5·0.5
Δ = 0
Delta is equal to zero, so there is only one solution to the equation

                              Stosujemy wzór:
$x=\frac{-b}{2a}=\frac{1}{1}=1$

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