7r^3=7r

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Solution for 7r^3=7r equation:


Simplifying
7r3 = 7r

Solving
7r3 = 7r

Solving for variable 'r'.

Reorder the terms:
-7r + 7r3 = 7r + -7r

Combine like terms: 7r + -7r = 0
-7r + 7r3 = 0

Factor out the Greatest Common Factor (GCF), '7r'.
7r(-1 + r2) = 0

Factor a difference between two squares.
7r((1 + r)(-1 + r)) = 0

Ignore the factor 7.

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

Subproblem 3

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

Solution

r = {0, -1, 1}

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