r^2=2r^2+15r

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Solution for r^2=2r^2+15r equation:


Simplifying
r2 = 2r2 + 15r

Reorder the terms:
r2 = 15r + 2r2

Solving
r2 = 15r + 2r2

Solving for variable 'r'.

Reorder the terms:
-15r + r2 + -2r2 = 15r + 2r2 + -15r + -2r2

Combine like terms: r2 + -2r2 = -1r2
-15r + -1r2 = 15r + 2r2 + -15r + -2r2

Reorder the terms:
-15r + -1r2 = 15r + -15r + 2r2 + -2r2

Combine like terms: 15r + -15r = 0
-15r + -1r2 = 0 + 2r2 + -2r2
-15r + -1r2 = 2r2 + -2r2

Combine like terms: 2r2 + -2r2 = 0
-15r + -1r2 = 0

Factor out the Greatest Common Factor (GCF), '-1r'.
-1r(15 + r) = 0

Ignore the factor -1.

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 '(15 + r)' equal to zero and attempt to solve: Simplifying 15 + r = 0 Solving 15 + r = 0 Move all terms containing r to the left, all other terms to the right. Add '-15' to each side of the equation. 15 + -15 + r = 0 + -15 Combine like terms: 15 + -15 = 0 0 + r = 0 + -15 r = 0 + -15 Combine like terms: 0 + -15 = -15 r = -15 Simplifying r = -15

Solution

r = {0, -15}

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