x=17/20,1140*x

Solution for x=17/20,1140*x equation:

x=17/20.1140x

We move all terms to the left:

x-(17/20.1140x)=0


Domain of the equation: 20.1140x)!=0

x!=0/1

x!=0

x∈R


We add all the numbers together, and all the variables

x-(+17/20.1140x)=0

We get rid of parentheses

x-17/20.1140x=0

We multiply all the terms by the denominator


x*20.1140x-17=0

Wy multiply elements

20x^2-17=0

a = 20; b = 0; c = -17;
Δ = b2-4ac
Δ = 02-4·20·(-17)
Δ = 1360
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:

$\sqrt{\Delta}=\sqrt{1360}=\sqrt{16*85}=\sqrt{16}*\sqrt{85}=4\sqrt{85}$
$x_{1}=\frac{-b-\sqrt{\Delta}}{2a}=\frac{-(0)-4\sqrt{85}}{2*20}=\frac{0-4\sqrt{85}}{40}
=-\frac{4\sqrt{85}}{40}
=-\frac{\sqrt{85}}{10}
$
$x_{2}=\frac{-b+\sqrt{\Delta}}{2a}=\frac{-(0)+4\sqrt{85}}{2*20}=\frac{0+4\sqrt{85}}{40}
=\frac{4\sqrt{85}}{40}
=\frac{\sqrt{85}}{10}
$