4x+5x(4x-2)=0

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Solution for 4x+5x(4x-2)=0 equation:



4x+5x(4x-2)=0
We multiply parentheses
20x^2+4x-10x=0
We add all the numbers together, and all the variables
20x^2-6x=0
a = 20; b = -6; c = 0;
Δ = b2-4ac
Δ = -62-4·20·0
Δ = 36
The delta value is higher than zero, so the equation has two solutions
We use following formulas to calculate our solutions:
$x_{1}=\frac{-b-\sqrt{\Delta}}{2a}$
$x_{2}=\frac{-b+\sqrt{\Delta}}{2a}$

$\sqrt{\Delta}=\sqrt{36}=6$
$x_{1}=\frac{-b-\sqrt{\Delta}}{2a}=\frac{-(-6)-6}{2*20}=\frac{0}{40} =0 $
$x_{2}=\frac{-b+\sqrt{\Delta}}{2a}=\frac{-(-6)+6}{2*20}=\frac{12}{40} =3/10 $

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