4x^4-11x^2-45=0

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Solution for 4x^4-11x^2-45=0 equation:


Simplifying
4x4 + -11x2 + -45 = 0

Reorder the terms:
-45 + -11x2 + 4x4 = 0

Solving
-45 + -11x2 + 4x4 = 0

Solving for variable 'x'.

Factor a trinomial.
(-9 + -4x2)(5 + -1x2) = 0

Subproblem 1

Set the factor '(-9 + -4x2)' equal to zero and attempt to solve: Simplifying -9 + -4x2 = 0 Solving -9 + -4x2 = 0 Move all terms containing x to the left, all other terms to the right. Add '9' to each side of the equation. -9 + 9 + -4x2 = 0 + 9 Combine like terms: -9 + 9 = 0 0 + -4x2 = 0 + 9 -4x2 = 0 + 9 Combine like terms: 0 + 9 = 9 -4x2 = 9 Divide each side by '-4'. x2 = -2.25 Simplifying x2 = -2.25 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 + -1x2)' equal to zero and attempt to solve: Simplifying 5 + -1x2 = 0 Solving 5 + -1x2 = 0 Move all terms containing x to the left, all other terms to the right. Add '-5' to each side of the equation. 5 + -5 + -1x2 = 0 + -5 Combine like terms: 5 + -5 = 0 0 + -1x2 = 0 + -5 -1x2 = 0 + -5 Combine like terms: 0 + -5 = -5 -1x2 = -5 Divide each side by '-1'. x2 = 5 Simplifying x2 = 5 Take the square root of each side: x = {-2.236067978, 2.236067978}

Solution

x = {-2.236067978, 2.236067978}

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