-8k^2-1=-73

Solution for -8k^2-1=-73 equation:

Simplifying
-8k2 + -1 = -73

Reorder the terms:
-1 + -8k2 = -73

Solving
-1 + -8k2 = -73

Solving for variable 'k'.

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

Add '1' to each side of the equation.
-1 + 1 + -8k2 = -73 + 1

Combine like terms: -1 + 1 = 0
0 + -8k2 = -73 + 1
-8k2 = -73 + 1

Combine like terms: -73 + 1 = -72
-8k2 = -72

Divide each side by '-8'.
k2 = 9

Simplifying
k2 = 9

Take the square root of each side:
k = {-3, 3}