7y(3y-y^3)=

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Solution for 7y(3y-y^3)= equation:


Simplifying
7y(3y + -1y3) = 0
(3y * 7y + -1y3 * 7y) = 0
(21y2 + -7y4) = 0

Solving
21y2 + -7y4 = 0

Solving for variable 'y'.

Factor out the Greatest Common Factor (GCF), '7y2'.
7y2(3 + -1y2) = 0

Ignore the factor 7.

Subproblem 1

Set the factor 'y2' equal to zero and attempt to solve: Simplifying y2 = 0 Solving y2 = 0 Move all terms containing y to the left, all other terms to the right. Simplifying y2 = 0 Take the square root of each side: y = {0}

Subproblem 2

Set the factor '(3 + -1y2)' equal to zero and attempt to solve: Simplifying 3 + -1y2 = 0 Solving 3 + -1y2 = 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 + -1y2 = 0 + -3 Combine like terms: 3 + -3 = 0 0 + -1y2 = 0 + -3 -1y2 = 0 + -3 Combine like terms: 0 + -3 = -3 -1y2 = -3 Divide each side by '-1'. y2 = 3 Simplifying y2 = 3 Take the square root of each side: y = {-1.732050808, 1.732050808}

Solution

y = {0, -1.732050808, 1.732050808}

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