r*r-16r=0

Solution for r*r-16r=0 equation:

Simplifying
r * r + -16r = 0

Multiply r * r
r2 + -16r = 0

Reorder the terms:
-16r + r2 = 0

Solving
-16r + r2 = 0

Solving for variable 'r'.

Factor out the Greatest Common Factor (GCF), 'r'.
r(-16 + r) = 0

Subproblem 1
Set the factor 'r' equal to zero and attempt to solve:

Simplifying
r = 0

Solving
r = 0

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

Simplifying
r = 0
Subproblem 2
Set the factor '(-16 + r)' equal to zero and attempt to solve:

Simplifying
-16 + r = 0

Solving
-16 + r = 0

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

Add '16' to each side of the equation.
-16 + 16 + r = 0 + 16

Combine like terms: -16 + 16 = 0
0 + r = 0 + 16
r = 0 + 16

Combine like terms: 0 + 16 = 16
r = 16

Simplifying
r = 16
Solution
r = {0, 16}