x=1.7x2+3x

Solution for x=1.7x2+3x equation:

x=1.7x^2+3x

We move all terms to the left:

x-(1.7x^2+3x)=0

We get rid of parentheses

-1.7x^2+x-3x=0

We add all the numbers together, and all the variables

-1.7x^2-2x=0

a = -1.7; b = -2; c = 0;
Δ = b2-4ac
Δ = -22-4·(-1.7)·0
Δ = 4
The delta value is higher than zero, so the equation has two solutions
We use following formulas to calculate our solutions:
$x_{1}=\frac{-b-\sqrt{\Delta}}{2a}$
$x_{2}=\frac{-b+\sqrt{\Delta}}{2a}$

$\sqrt{\Delta}=\sqrt{4}=2$
$x_{1}=\frac{-b-\sqrt{\Delta}}{2a}=\frac{-(-2)-2}{2*-1.7}=\frac{0}{-3.4}
=0
$
$x_{2}=\frac{-b+\sqrt{\Delta}}{2a}=\frac{-(-2)+2}{2*-1.7}=\frac{4}{-3.4}
=-1+0.6/3.4
$