2n^2-n-1600=0

Solution for 2n^2-n-1600=0 equation:

2n^2-n-1600=0

We add all the numbers together, and all the variables

2n^2-1n-1600=0

a = 2; b = -1; c = -1600;
Δ = b2-4ac
Δ = -12-4·2·(-1600)
Δ = 12801
The delta value is higher than zero, so the equation has two solutions
We use following formulas to calculate our solutions:
$n_{1}=\frac{-b-\sqrt{\Delta}}{2a}$
$n_{2}=\frac{-b+\sqrt{\Delta}}{2a}$

$n_{1}=\frac{-b-\sqrt{\Delta}}{2a}=\frac{-(-1)-\sqrt{12801}}{2*2}=\frac{1-\sqrt{12801}}{4}
$
$n_{2}=\frac{-b+\sqrt{\Delta}}{2a}=\frac{-(-1)+\sqrt{12801}}{2*2}=\frac{1+\sqrt{12801}}{4}
$