10000000(x^2)+2000000x-1.7=0

Solution for 10000000(x^2)+2000000x-1.7=0 equation:

10000000(x^2)+2000000x-1.7=0

a = 10000000; b = 2000000; c = -1.7;
Δ = b2-4ac
Δ = 20000002-4·10000000·(-1.7)
Δ = 4000068000000
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:

$\sqrt{\Delta}=\sqrt{4000068000000}=\sqrt{36000000*111113}=\sqrt{36000000}*\sqrt{111113}=6000\sqrt{111113}$
$x_{1}=\frac{-b-\sqrt{\Delta}}{2a}=\frac{-(2000000)-6000\sqrt{111113}}{2*10000000}=\frac{-2000000-6000\sqrt{111113}}{20000000}
$
$x_{2}=\frac{-b+\sqrt{\Delta}}{2a}=\frac{-(2000000)+6000\sqrt{111113}}{2*10000000}=\frac{-2000000+6000\sqrt{111113}}{20000000}
$