100d^2-76=68

Solution for 100d^2-76=68 equation:

100d^2-76=68

We move all terms to the left:

100d^2-76-(68)=0

We add all the numbers together, and all the variables

100d^2-144=0

a = 100; b = 0; c = -144;
Δ = b2-4ac
Δ = 02-4·100·(-144)
Δ = 57600
The delta value is higher than zero, so the equation has two solutions
We use following formulas to calculate our solutions:
$d_{1}=\frac{-b-\sqrt{\Delta}}{2a}$
$d_{2}=\frac{-b+\sqrt{\Delta}}{2a}$

$\sqrt{\Delta}=\sqrt{57600}=240$
$d_{1}=\frac{-b-\sqrt{\Delta}}{2a}=\frac{-(0)-240}{2*100}=\frac{-240}{200}
=-1+1/5
$
$d_{2}=\frac{-b+\sqrt{\Delta}}{2a}=\frac{-(0)+240}{2*100}=\frac{240}{200}
=1+1/5
$