(-0.25x^2)+5x=0

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Solution for (-0.25x^2)+5x=0 equation:



(-0.25x^2)+5x=0
We get rid of parentheses
-0.25x^2+5x=0
a = -0.25; b = 5; c = 0;
Δ = b2-4ac
Δ = 52-4·(-0.25)·0
Δ = 25
The delta value is higher than zero, so the equation has two solutions
We use following formulas to calculate our solutions:
$x_{1}=\frac{-b-\sqrt{\Delta}}{2a}$
$x_{2}=\frac{-b+\sqrt{\Delta}}{2a}$

$\sqrt{\Delta}=\sqrt{25}=5$
$x_{1}=\frac{-b-\sqrt{\Delta}}{2a}=\frac{-(5)-5}{2*-0.25}=\frac{-10}{-0.5} =+20 $
$x_{2}=\frac{-b+\sqrt{\Delta}}{2a}=\frac{-(5)+5}{2*-0.25}=\frac{0}{-0.5} =0 $

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