0.4x(1-x)-0.08=0

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Solution for 0.4x(1-x)-0.08=0 equation:



0.4x(1-x)-0.08=0
We add all the numbers together, and all the variables
0.4x(-1x+1)-0.08=0
We multiply parentheses
0x^2+0x-0.08=0
We add all the numbers together, and all the variables
x^2+x-0.08=0
a = 1; b = 1; c = -0.08;
Δ = b2-4ac
Δ = 12-4·1·(-0.08)
Δ = 1.32
The delta value is higher than zero, so the equation has two solutions
We use following formulas to calculate our solutions:
$x_{1}=\frac{-b-\sqrt{\Delta}}{2a}$
$x_{2}=\frac{-b+\sqrt{\Delta}}{2a}$

$x_{1}=\frac{-b-\sqrt{\Delta}}{2a}=\frac{-(1)-\sqrt{1.32}}{2*1}=\frac{-1-\sqrt{1.32}}{2} $
$x_{2}=\frac{-b+\sqrt{\Delta}}{2a}=\frac{-(1)+\sqrt{1.32}}{2*1}=\frac{-1+\sqrt{1.32}}{2} $

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