y^4-11y^2-60=0

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Solution for y^4-11y^2-60=0 equation:


Simplifying
y4 + -11y2 + -60 = 0

Reorder the terms:
-60 + -11y2 + y4 = 0

Solving
-60 + -11y2 + y4 = 0

Solving for variable 'y'.

Factor a trinomial.
(-4 + -1y2)(15 + -1y2) = 0

Subproblem 1

Set the factor '(-4 + -1y2)' equal to zero and attempt to solve: Simplifying -4 + -1y2 = 0 Solving -4 + -1y2 = 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 + -1y2 = 0 + 4 Combine like terms: -4 + 4 = 0 0 + -1y2 = 0 + 4 -1y2 = 0 + 4 Combine like terms: 0 + 4 = 4 -1y2 = 4 Divide each side by '-1'. y2 = -4 Simplifying y2 = -4 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 '(15 + -1y2)' equal to zero and attempt to solve: Simplifying 15 + -1y2 = 0 Solving 15 + -1y2 = 0 Move all terms containing y to the left, all other terms to the right. Add '-15' to each side of the equation. 15 + -15 + -1y2 = 0 + -15 Combine like terms: 15 + -15 = 0 0 + -1y2 = 0 + -15 -1y2 = 0 + -15 Combine like terms: 0 + -15 = -15 -1y2 = -15 Divide each side by '-1'. y2 = 15 Simplifying y2 = 15 Take the square root of each side: y = {-3.872983346, 3.872983346}

Solution

y = {-3.872983346, 3.872983346}

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