26=2x*4x

Solution for 26=2x*4x equation:

26=2x*4x

We move all terms to the left:

26-(2x*4x)=0

We add all the numbers together, and all the variables

-(+2x*4x)+26=0

We get rid of parentheses

-2x*4x+26=0

Wy multiply elements

-8x^2+26=0

a = -8; b = 0; c = +26;
Δ = b2-4ac
Δ = 02-4·(-8)·26
Δ = 832
The delta value is higher than zero, so the equation has two solutions
We use following formulas to calculate our solutions:
$x_{1}=\frac{-b-\sqrt{\Delta}}{2a}$
$x_{2}=\frac{-b+\sqrt{\Delta}}{2a}$

The end solution:

$\sqrt{\Delta}=\sqrt{832}=\sqrt{64*13}=\sqrt{64}*\sqrt{13}=8\sqrt{13}$
$x_{1}=\frac{-b-\sqrt{\Delta}}{2a}=\frac{-(0)-8\sqrt{13}}{2*-8}=\frac{0-8\sqrt{13}}{-16}
=-\frac{8\sqrt{13}}{-16}
=-\frac{\sqrt{13}}{-2}
$
$x_{2}=\frac{-b+\sqrt{\Delta}}{2a}=\frac{-(0)+8\sqrt{13}}{2*-8}=\frac{0+8\sqrt{13}}{-16}
=\frac{8\sqrt{13}}{-16}
=\frac{\sqrt{13}}{-2}
$