b^4-16=0

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Solution for b^4-16=0 equation:


Simplifying
b4 + -16 = 0

Reorder the terms:
-16 + b4 = 0

Solving
-16 + b4 = 0

Solving for variable 'b'.

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

Add '16' to each side of the equation.
-16 + 16 + b4 = 0 + 16

Combine like terms: -16 + 16 = 0
0 + b4 = 0 + 16
b4 = 0 + 16

Combine like terms: 0 + 16 = 16
b4 = 16

Simplifying
b4 = 16

Reorder the terms:
-16 + b4 = 16 + -16

Combine like terms: 16 + -16 = 0
-16 + b4 = 0

Factor a difference between two squares.
(4 + b2)(-4 + b2) = 0

Factor a difference between two squares.
(4 + b2)((2 + b)(-2 + b)) = 0

Subproblem 1

Set the factor '(4 + b2)' equal to zero and attempt to solve: Simplifying 4 + b2 = 0 Solving 4 + b2 = 0 Move all terms containing b to the left, all other terms to the right. Add '-4' to each side of the equation. 4 + -4 + b2 = 0 + -4 Combine like terms: 4 + -4 = 0 0 + b2 = 0 + -4 b2 = 0 + -4 Combine like terms: 0 + -4 = -4 b2 = -4 Simplifying b2 = -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 '(2 + b)' equal to zero and attempt to solve: Simplifying 2 + b = 0 Solving 2 + b = 0 Move all terms containing b to the left, all other terms to the right. Add '-2' to each side of the equation. 2 + -2 + b = 0 + -2 Combine like terms: 2 + -2 = 0 0 + b = 0 + -2 b = 0 + -2 Combine like terms: 0 + -2 = -2 b = -2 Simplifying b = -2

Subproblem 3

Set the factor '(-2 + b)' equal to zero and attempt to solve: Simplifying -2 + b = 0 Solving -2 + b = 0 Move all terms containing b to the left, all other terms to the right. Add '2' to each side of the equation. -2 + 2 + b = 0 + 2 Combine like terms: -2 + 2 = 0 0 + b = 0 + 2 b = 0 + 2 Combine like terms: 0 + 2 = 2 b = 2 Simplifying b = 2

Solution

b = {-2, 2}

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