8x^2-2x-3=3

Solution for 8x^2-2x-3=3 equation:

8x^2-2x-3=3

We move all terms to the left:

8x^2-2x-3-(3)=0

We add all the numbers together, and all the variables

8x^2-2x-6=0

a = 8; b = -2; c = -6;
Δ = b2-4ac
Δ = -22-4·8·(-6)
Δ = 196
The delta value is higher than zero, so the equation has two solutions
We use following formulas to calculate our solutions:
$x_{1}=\frac{-b-\sqrt{\Delta}}{2a}$
$x_{2}=\frac{-b+\sqrt{\Delta}}{2a}$

$\sqrt{\Delta}=\sqrt{196}=14$
$x_{1}=\frac{-b-\sqrt{\Delta}}{2a}=\frac{-(-2)-14}{2*8}=\frac{-12}{16}
=-3/4
$
$x_{2}=\frac{-b+\sqrt{\Delta}}{2a}=\frac{-(-2)+14}{2*8}=\frac{16}{16}
=1
$