8r^2-6=786

Solution for 8r^2-6=786 equation:

Simplifying
8r2 + -6 = 786

Reorder the terms:
-6 + 8r2 = 786

Solving
-6 + 8r2 = 786

Solving for variable 'r'.

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

Add '6' to each side of the equation.
-6 + 6 + 8r2 = 786 + 6

Combine like terms: -6 + 6 = 0
0 + 8r2 = 786 + 6
8r2 = 786 + 6

Combine like terms: 786 + 6 = 792
8r2 = 792

Divide each side by '8'.
r2 = 99

Simplifying
r2 = 99

Take the square root of each side:
r = {-9.949874371, 9.949874371}