3y^4-11y^2-20=

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Solution for 3y^4-11y^2-20= equation:


Simplifying
3y4 + -11y2 + -20 = 0

Reorder the terms:
-20 + -11y2 + 3y4 = 0

Solving
-20 + -11y2 + 3y4 = 0

Solving for variable 'y'.

Factor a trinomial.
(-4 + -3y2)(5 + -1y2) = 0

Subproblem 1

Set the factor '(-4 + -3y2)' equal to zero and attempt to solve: Simplifying -4 + -3y2 = 0 Solving -4 + -3y2 = 0 Move all terms containing y to the left, all other terms to the right. Add '4' to each side of the equation. -4 + 4 + -3y2 = 0 + 4 Combine like terms: -4 + 4 = 0 0 + -3y2 = 0 + 4 -3y2 = 0 + 4 Combine like terms: 0 + 4 = 4 -3y2 = 4 Divide each side by '-3'. y2 = -1.333333333 Simplifying y2 = -1.333333333 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 '(5 + -1y2)' equal to zero and attempt to solve: Simplifying 5 + -1y2 = 0 Solving 5 + -1y2 = 0 Move all terms containing y to the left, all other terms to the right. Add '-5' to each side of the equation. 5 + -5 + -1y2 = 0 + -5 Combine like terms: 5 + -5 = 0 0 + -1y2 = 0 + -5 -1y2 = 0 + -5 Combine like terms: 0 + -5 = -5 -1y2 = -5 Divide each side by '-1'. y2 = 5 Simplifying y2 = 5 Take the square root of each side: y = {-2.236067978, 2.236067978}

Solution

y = {-2.236067978, 2.236067978}

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