r^2=2r^3+15r^2

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Solution for r^2=2r^3+15r^2 equation:


Simplifying
r2 = 2r3 + 15r2

Reorder the terms:
r2 = 15r2 + 2r3

Solving
r2 = 15r2 + 2r3

Solving for variable 'r'.

Combine like terms: r2 + -15r2 = -14r2
-14r2 + -2r3 = 15r2 + 2r3 + -15r2 + -2r3

Reorder the terms:
-14r2 + -2r3 = 15r2 + -15r2 + 2r3 + -2r3

Combine like terms: 15r2 + -15r2 = 0
-14r2 + -2r3 = 0 + 2r3 + -2r3
-14r2 + -2r3 = 2r3 + -2r3

Combine like terms: 2r3 + -2r3 = 0
-14r2 + -2r3 = 0

Factor out the Greatest Common Factor (GCF), '-2r2'.
-2r2(7 + r) = 0

Ignore the factor -2.

Subproblem 1

Set the factor 'r2' equal to zero and attempt to solve: Simplifying r2 = 0 Solving r2 = 0 Move all terms containing r to the left, all other terms to the right. Simplifying r2 = 0 Take the square root of each side: r = {0}

Subproblem 2

Set the factor '(7 + r)' equal to zero and attempt to solve: Simplifying 7 + r = 0 Solving 7 + r = 0 Move all terms containing r to the left, all other terms to the right. Add '-7' to each side of the equation. 7 + -7 + r = 0 + -7 Combine like terms: 7 + -7 = 0 0 + r = 0 + -7 r = 0 + -7 Combine like terms: 0 + -7 = -7 r = -7 Simplifying r = -7

Solution

r = {0, -7}

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