r^2+11-88=

Solution for r^2+11-88= equation:

Simplifying
r2 + 11 + -88 = 0

Reorder the terms:
11 + -88 + r2 = 0

Combine like terms: 11 + -88 = -77
-77 + r2 = 0

Solving
-77 + r2 = 0

Solving for variable 'r'.

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

Add '77' to each side of the equation.
-77 + 77 + r2 = 0 + 77

Combine like terms: -77 + 77 = 0
0 + r2 = 0 + 77
r2 = 0 + 77

Combine like terms: 0 + 77 = 77
r2 = 77

Simplifying
r2 = 77

Take the square root of each side:
r = {-8.774964387, 8.774964387}