-5x(1-4x)=00

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Solution for -5x(1-4x)=00 equation:



-5x(1-4x)=00
We add all the numbers together, and all the variables
-5x(-4x+1)=0
We multiply parentheses
20x^2-5x=0
a = 20; b = -5; c = 0;
Δ = b2-4ac
Δ = -52-4·20·0
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*20}=\frac{0}{40} =0 $
$x_{2}=\frac{-b+\sqrt{\Delta}}{2a}=\frac{-(-5)+5}{2*20}=\frac{10}{40} =1/4 $

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