5b^4-405=0

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Solution for 5b^4-405=0 equation:


Simplifying
5b4 + -405 = 0

Reorder the terms:
-405 + 5b4 = 0

Solving
-405 + 5b4 = 0

Solving for variable 'b'.

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

Add '405' to each side of the equation.
-405 + 405 + 5b4 = 0 + 405

Combine like terms: -405 + 405 = 0
0 + 5b4 = 0 + 405
5b4 = 0 + 405

Combine like terms: 0 + 405 = 405
5b4 = 405

Divide each side by '5'.
b4 = 81

Simplifying
b4 = 81

Reorder the terms:
-81 + b4 = 81 + -81

Combine like terms: 81 + -81 = 0
-81 + b4 = 0

Factor a difference between two squares.
(9 + b2)(-9 + b2) = 0

Factor a difference between two squares.
(9 + b2)((3 + b)(-3 + b)) = 0

Subproblem 1

Set the factor '(9 + b2)' equal to zero and attempt to solve: Simplifying 9 + b2 = 0 Solving 9 + b2 = 0 Move all terms containing b to the left, all other terms to the right. Add '-9' to each side of the equation. 9 + -9 + b2 = 0 + -9 Combine like terms: 9 + -9 = 0 0 + b2 = 0 + -9 b2 = 0 + -9 Combine like terms: 0 + -9 = -9 b2 = -9 Simplifying b2 = -9 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 + b)' equal to zero and attempt to solve: Simplifying 3 + b = 0 Solving 3 + b = 0 Move all terms containing b to the left, all other terms to the right. Add '-3' to each side of the equation. 3 + -3 + b = 0 + -3 Combine like terms: 3 + -3 = 0 0 + b = 0 + -3 b = 0 + -3 Combine like terms: 0 + -3 = -3 b = -3 Simplifying b = -3

Subproblem 3

Set the factor '(-3 + b)' equal to zero and attempt to solve: Simplifying -3 + b = 0 Solving -3 + b = 0 Move all terms containing b to the left, all other terms to the right. Add '3' to each side of the equation. -3 + 3 + b = 0 + 3 Combine like terms: -3 + 3 = 0 0 + b = 0 + 3 b = 0 + 3 Combine like terms: 0 + 3 = 3 b = 3 Simplifying b = 3

Solution

b = {-3, 3}

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