2w^4-13w^2+15=0

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Solution for 2w^4-13w^2+15=0 equation:


Simplifying
2w4 + -13w2 + 15 = 0

Reorder the terms:
15 + -13w2 + 2w4 = 0

Solving
15 + -13w2 + 2w4 = 0

Solving for variable 'w'.

Factor a trinomial.
(3 + -2w2)(5 + -1w2) = 0

Subproblem 1

Set the factor '(3 + -2w2)' equal to zero and attempt to solve: Simplifying 3 + -2w2 = 0 Solving 3 + -2w2 = 0 Move all terms containing w to the left, all other terms to the right. Add '-3' to each side of the equation. 3 + -3 + -2w2 = 0 + -3 Combine like terms: 3 + -3 = 0 0 + -2w2 = 0 + -3 -2w2 = 0 + -3 Combine like terms: 0 + -3 = -3 -2w2 = -3 Divide each side by '-2'. w2 = 1.5 Simplifying w2 = 1.5 Take the square root of each side: w = {-1.224744871, 1.224744871}

Subproblem 2

Set the factor '(5 + -1w2)' equal to zero and attempt to solve: Simplifying 5 + -1w2 = 0 Solving 5 + -1w2 = 0 Move all terms containing w to the left, all other terms to the right. Add '-5' to each side of the equation. 5 + -5 + -1w2 = 0 + -5 Combine like terms: 5 + -5 = 0 0 + -1w2 = 0 + -5 -1w2 = 0 + -5 Combine like terms: 0 + -5 = -5 -1w2 = -5 Divide each side by '-1'. w2 = 5 Simplifying w2 = 5 Take the square root of each side: w = {-2.236067978, 2.236067978}

Solution

w = {-1.224744871, 1.224744871, -2.236067978, 2.236067978}

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