0a-2a=2a*4a

Solution for 0a-2a=2a*4a equation:

0a-2a=2a*4a

We move all terms to the left:

0a-2a-(2a*4a)=0

We add all the numbers together, and all the variables

0a-2a-(+2a*4a)=0

We add all the numbers together, and all the variables

-1a-(+2a*4a)=0

We get rid of parentheses

-1a-2a*4a=0

Wy multiply elements

-8a^2-1a=0

a = -8; b = -1; c = 0;
Δ = b2-4ac
Δ = -12-4·(-8)·0
Δ = 1
The delta value is higher than zero, so the equation has two solutions
We use following formulas to calculate our solutions:
$a_{1}=\frac{-b-\sqrt{\Delta}}{2a}$
$a_{2}=\frac{-b+\sqrt{\Delta}}{2a}$

$\sqrt{\Delta}=\sqrt{1}=1$
$a_{1}=\frac{-b-\sqrt{\Delta}}{2a}=\frac{-(-1)-1}{2*-8}=\frac{0}{-16}
=0
$
$a_{2}=\frac{-b+\sqrt{\Delta}}{2a}=\frac{-(-1)+1}{2*-8}=\frac{2}{-16}
=-1/8
$