20d^2-82+80=0

Solution for 20d^2-82+80=0 equation:

Simplifying
20d2 + -82 + 80 = 0

Reorder the terms:
-82 + 80 + 20d2 = 0

Combine like terms: -82 + 80 = -2
-2 + 20d2 = 0

Solving
-2 + 20d2 = 0

Solving for variable 'd'.

Move all terms containing d to the left, all other terms to the right.

Add '2' to each side of the equation.
-2 + 2 + 20d2 = 0 + 2

Combine like terms: -2 + 2 = 0
0 + 20d2 = 0 + 2
20d2 = 0 + 2

Combine like terms: 0 + 2 = 2
20d2 = 2

Divide each side by '20'.
d2 = 0.1

Simplifying
d2 = 0.1

Take the square root of each side:
d = {-0.316227766, 0.316227766}