0=r^2-2r+64

Solution for 0=r^2-2r+64 equation:

Simplifying
0 = r2 + -2r + 64

Reorder the terms:
0 = 64 + -2r + r2

Solving
0 = 64 + -2r + r2

Solving for variable 'r'.

Combine like terms: 0 + -64 = -64
-64 + 2r + -1r2 = 64 + -2r + r2 + -64 + 2r + -1r2

Reorder the terms:
-64 + 2r + -1r2 = 64 + -64 + -2r + 2r + r2 + -1r2

Combine like terms: 64 + -64 = 0
-64 + 2r + -1r2 = 0 + -2r + 2r + r2 + -1r2
-64 + 2r + -1r2 = -2r + 2r + r2 + -1r2

Combine like terms: -2r + 2r = 0
-64 + 2r + -1r2 = 0 + r2 + -1r2
-64 + 2r + -1r2 = r2 + -1r2

Combine like terms: r2 + -1r2 = 0
-64 + 2r + -1r2 = 0

Begin completing the square.  Divide all terms by
-1 the coefficient of the squared term: 

Divide each side by '-1'.
64 + -2r + r2 = 0

Move the constant term to the right:

Add '-64' to each side of the equation.
64 + -2r + -64 + r2 = 0 + -64

Reorder the terms:
64 + -64 + -2r + r2 = 0 + -64

Combine like terms: 64 + -64 = 0
0 + -2r + r2 = 0 + -64
-2r + r2 = 0 + -64

Combine like terms: 0 + -64 = -64
-2r + r2 = -64

The r term is -2r.  Take half its coefficient (-1).
Square it (1) and add it to both sides.

Add '1' to each side of the equation.
-2r + 1 + r2 = -64 + 1

Reorder the terms:
1 + -2r + r2 = -64 + 1

Combine like terms: -64 + 1 = -63
1 + -2r + r2 = -63

Factor a perfect square on the left side:
(r + -1)(r + -1) = -63

Can't calculate square root of the right side.

The solution to this equation could not be determined.