2r^5-6r^4=56r^3

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Solution for 2r^5-6r^4=56r^3 equation:


Simplifying
2r5 + -6r4 = 56r3

Reorder the terms:
-6r4 + 2r5 = 56r3

Solving
-6r4 + 2r5 = 56r3

Solving for variable 'r'.

Reorder the terms:
-56r3 + -6r4 + 2r5 = 56r3 + -56r3

Combine like terms: 56r3 + -56r3 = 0
-56r3 + -6r4 + 2r5 = 0

Factor out the Greatest Common Factor (GCF), '2r3'.
2r3(-28 + -3r + r2) = 0

Factor a trinomial.
2r3((-4 + -1r)(7 + -1r)) = 0

Ignore the factor 2.

Subproblem 1

Set the factor 'r3' equal to zero and attempt to solve: Simplifying r3 = 0 Solving r3 = 0 Move all terms containing r to the left, all other terms to the right. Simplifying r3 = 0 The solution to this equation could not be determined. This subproblem is being ignored because a solution could not be determined.

Subproblem 2

Set the factor '(-4 + -1r)' equal to zero and attempt to solve: Simplifying -4 + -1r = 0 Solving -4 + -1r = 0 Move all terms containing r to the left, all other terms to the right. Add '4' to each side of the equation. -4 + 4 + -1r = 0 + 4 Combine like terms: -4 + 4 = 0 0 + -1r = 0 + 4 -1r = 0 + 4 Combine like terms: 0 + 4 = 4 -1r = 4 Divide each side by '-1'. r = -4 Simplifying r = -4

Subproblem 3

Set the factor '(7 + -1r)' equal to zero and attempt to solve: Simplifying 7 + -1r = 0 Solving 7 + -1r = 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 + -1r = 0 + -7 Combine like terms: 7 + -7 = 0 0 + -1r = 0 + -7 -1r = 0 + -7 Combine like terms: 0 + -7 = -7 -1r = -7 Divide each side by '-1'. r = 7 Simplifying r = 7

Solution

r = {-4, 7}

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