3x^4-43x^2+144=0

Solution for 3x^4-43x^2+144=0 equation:

Simplifying
3x4 + -43x2 + 144 = 0

Reorder the terms:
144 + -43x2 + 3x4 = 0

Solving
144 + -43x2 + 3x4 = 0

Solving for variable 'x'.

Factor a trinomial.
(16 + -3x2)(9 + -1x2) = 0

Factor a difference between two squares.
(16 + -3x2)((3 + x)(3 + -1x)) = 0

Subproblem 1
Set the factor '(16 + -3x2)' equal to zero and attempt to solve:

Simplifying
16 + -3x2 = 0

Solving
16 + -3x2 = 0

Move all terms containing x to the left, all other terms to the right.

Add '-16' to each side of the equation.
16 + -16 + -3x2 = 0 + -16

Combine like terms: 16 + -16 = 0
0 + -3x2 = 0 + -16
-3x2 = 0 + -16

Combine like terms: 0 + -16 = -16
-3x2 = -16

Divide each side by '-3'.
x2 = 5.333333333

Simplifying
x2 = 5.333333333

Take the square root of each side:
x = {-2.309401077, 2.309401077}
Subproblem 2
Set the factor '(3 + x)' equal to zero and attempt to solve:

Simplifying
3 + x = 0

Solving
3 + x = 0

Move all terms containing x to the left, all other terms to the right.

Add '-3' to each side of the equation.
3 + -3 + x = 0 + -3

Combine like terms: 3 + -3 = 0
0 + x = 0 + -3
x = 0 + -3

Combine like terms: 0 + -3 = -3
x = -3

Simplifying
x = -3
Subproblem 3
Set the factor '(3 + -1x)' equal to zero and attempt to solve:

Simplifying
3 + -1x = 0

Solving
3 + -1x = 0

Move all terms containing x to the left, all other terms to the right.

Add '-3' to each side of the equation.
3 + -3 + -1x = 0 + -3

Combine like terms: 3 + -3 = 0
0 + -1x = 0 + -3
-1x = 0 + -3

Combine like terms: 0 + -3 = -3
-1x = -3

Divide each side by '-1'.
x = 3

Simplifying
x = 3
Solution
x = {-2.309401077, 2.309401077, -3, 3}