5x^4-45=0

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Solution for 5x^4-45=0 equation:


Simplifying
5x4 + -45 = 0

Reorder the terms:
-45 + 5x4 = 0

Solving
-45 + 5x4 = 0

Solving for variable 'x'.

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

Add '45' to each side of the equation.
-45 + 45 + 5x4 = 0 + 45

Combine like terms: -45 + 45 = 0
0 + 5x4 = 0 + 45
5x4 = 0 + 45

Combine like terms: 0 + 45 = 45
5x4 = 45

Divide each side by '5'.
x4 = 9

Simplifying
x4 = 9

Reorder the terms:
-9 + x4 = 9 + -9

Combine like terms: 9 + -9 = 0
-9 + x4 = 0

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

Subproblem 1

Set the factor '(3 + x2)' equal to zero and attempt to solve: Simplifying 3 + x2 = 0 Solving 3 + x2 = 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 + x2 = 0 + -3 Combine like terms: 3 + -3 = 0 0 + x2 = 0 + -3 x2 = 0 + -3 Combine like terms: 0 + -3 = -3 x2 = -3 Simplifying x2 = -3 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 '(-3 + x2)' equal to zero and attempt to solve: Simplifying -3 + x2 = 0 Solving -3 + x2 = 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 + x2 = 0 + 3 Combine like terms: -3 + 3 = 0 0 + x2 = 0 + 3 x2 = 0 + 3 Combine like terms: 0 + 3 = 3 x2 = 3 Simplifying x2 = 3 Take the square root of each side: x = {-1.732050808, 1.732050808}

Solution

x = {-1.732050808, 1.732050808}

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