7y^4-21y=0

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Solution for 7y^4-21y=0 equation:


Simplifying
7y4 + -21y = 0

Reorder the terms:
-21y + 7y4 = 0

Solving
-21y + 7y4 = 0

Solving for variable 'y'.

Factor out the Greatest Common Factor (GCF), '7y'.
7y(-3 + y3) = 0

Ignore the factor 7.

Subproblem 1

Set the factor 'y' equal to zero and attempt to solve: Simplifying y = 0 Solving y = 0 Move all terms containing y to the left, all other terms to the right. Simplifying y = 0

Subproblem 2

Set the factor '(-3 + y3)' equal to zero and attempt to solve: Simplifying -3 + y3 = 0 Solving -3 + y3 = 0 Move all terms containing y to the left, all other terms to the right. Add '3' to each side of the equation. -3 + 3 + y3 = 0 + 3 Combine like terms: -3 + 3 = 0 0 + y3 = 0 + 3 y3 = 0 + 3 Combine like terms: 0 + 3 = 3 y3 = 3 Simplifying y3 = 3 The solution to this equation could not be determined. This subproblem is being ignored because a solution could not be determined.

Solution

y = {0}

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