r^2+64-12r=0

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Solution for r^2+64-12r=0 equation:


Simplifying
r2 + 64 + -12r = 0

Reorder the terms:
64 + -12r + r2 = 0

Solving
64 + -12r + r2 = 0

Solving for variable 'r'.

Begin completing the square.

Move the constant term to the right:

Add '-64' to each side of the equation.
64 + -12r + -64 + r2 = 0 + -64

Reorder the terms:
64 + -64 + -12r + r2 = 0 + -64

Combine like terms: 64 + -64 = 0
0 + -12r + r2 = 0 + -64
-12r + r2 = 0 + -64

Combine like terms: 0 + -64 = -64
-12r + r2 = -64

The r term is -12r.  Take half its coefficient (-6).
Square it (36) and add it to both sides.

Add '36' to each side of the equation.
-12r + 36 + r2 = -64 + 36

Reorder the terms:
36 + -12r + r2 = -64 + 36

Combine like terms: -64 + 36 = -28
36 + -12r + r2 = -28

Factor a perfect square on the left side:
(r + -6)(r + -6) = -28

Can't calculate square root of the right side.

The solution to this equation could not be determined.

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