10r^3=40r

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Solution for 10r^3=40r equation:


Simplifying
10r3 = 40r

Solving
10r3 = 40r

Solving for variable 'r'.

Reorder the terms:
-40r + 10r3 = 40r + -40r

Combine like terms: 40r + -40r = 0
-40r + 10r3 = 0

Factor out the Greatest Common Factor (GCF), '10r'.
10r(-4 + r2) = 0

Factor a difference between two squares.
10r((2 + r)(-2 + r)) = 0

Ignore the factor 10.

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 + r)' equal to zero and attempt to solve: Simplifying 2 + r = 0 Solving 2 + r = 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 + r = 0 + -2 Combine like terms: 2 + -2 = 0 0 + r = 0 + -2 r = 0 + -2 Combine like terms: 0 + -2 = -2 r = -2 Simplifying r = -2

Subproblem 3

Set the factor '(-2 + r)' equal to zero and attempt to solve: Simplifying -2 + r = 0 Solving -2 + r = 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 + r = 0 + 2 Combine like terms: -2 + 2 = 0 0 + r = 0 + 2 r = 0 + 2 Combine like terms: 0 + 2 = 2 r = 2 Simplifying r = 2

Solution

r = {0, -2, 2}

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