3r^3+7r^2=6r

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Solution for 3r^3+7r^2=6r equation:


Simplifying
3r3 + 7r2 = 6r

Reorder the terms:
7r2 + 3r3 = 6r

Solving
7r2 + 3r3 = 6r

Solving for variable 'r'.

Reorder the terms:
-6r + 7r2 + 3r3 = 6r + -6r

Combine like terms: 6r + -6r = 0
-6r + 7r2 + 3r3 = 0

Factor out the Greatest Common Factor (GCF), 'r'.
r(-6 + 7r + 3r2) = 0

Factor a trinomial.
r((-3 + -1r)(2 + -3r)) = 0

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 '(-3 + -1r)' equal to zero and attempt to solve: Simplifying -3 + -1r = 0 Solving -3 + -1r = 0 Move all terms containing r to the left, all other terms to the right. Add '3' to each side of the equation. -3 + 3 + -1r = 0 + 3 Combine like terms: -3 + 3 = 0 0 + -1r = 0 + 3 -1r = 0 + 3 Combine like terms: 0 + 3 = 3 -1r = 3 Divide each side by '-1'. r = -3 Simplifying r = -3

Subproblem 3

Set the factor '(2 + -3r)' equal to zero and attempt to solve: Simplifying 2 + -3r = 0 Solving 2 + -3r = 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 + -3r = 0 + -2 Combine like terms: 2 + -2 = 0 0 + -3r = 0 + -2 -3r = 0 + -2 Combine like terms: 0 + -2 = -2 -3r = -2 Divide each side by '-3'. r = 0.6666666667 Simplifying r = 0.6666666667

Solution

r = {0, -3, 0.6666666667}

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