=3r(r-2)

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Solution for =3r(r-2) equation:


Simplifying
0 = 3r(r + -2)

Reorder the terms:
0 = 3r(-2 + r)
0 = (-2 * 3r + r * 3r)
0 = (-6r + 3r2)

Solving
0 = -6r + 3r2

Solving for variable 'r'.
Remove the zero:
6r + -3r2 = -6r + 3r2 + 6r + -3r2

Reorder the terms:
6r + -3r2 = -6r + 6r + 3r2 + -3r2

Combine like terms: -6r + 6r = 0
6r + -3r2 = 0 + 3r2 + -3r2
6r + -3r2 = 3r2 + -3r2

Combine like terms: 3r2 + -3r2 = 0
6r + -3r2 = 0

Factor out the Greatest Common Factor (GCF), '3r'.
3r(2 + -1r) = 0

Ignore the factor 3.

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 '(2 + -1r)' equal to zero and attempt to solve: Simplifying 2 + -1r = 0 Solving 2 + -1r = 0 Move all terms containing r to the left, all other terms to the right. Add '-2' to each side of the equation. 2 + -2 + -1r = 0 + -2 Combine like terms: 2 + -2 = 0 0 + -1r = 0 + -2 -1r = 0 + -2 Combine like terms: 0 + -2 = -2 -1r = -2 Divide each side by '-1'. r = 2 Simplifying r = 2

Solution

r = {0, 2}

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