b^4-121=

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Solution for b^4-121= equation: 


Simplifying
b4 + -121 = 0

Reorder the terms:
-121 + b4 = 0

Solving
-121 + b4 = 0

Solving for variable 'b'.

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

Add '121' to each side of the equation.
-121 + 121 + b4 = 0 + 121

Combine like terms: -121 + 121 = 0
0 + b4 = 0 + 121
b4 = 0 + 121

Combine like terms: 0 + 121 = 121
b4 = 121

Simplifying
b4 = 121

Reorder the terms:
-121 + b4 = 121 + -121

Combine like terms: 121 + -121 = 0
-121 + b4 = 0

Factor a difference between two squares.
(11 + b2)(-11 + b2) = 0


Subproblem 1
Set the factor '(11 + b2)' equal to zero and attempt to solve:

Simplifying
11 + b2 = 0

Solving
11 + b2 = 0

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

Add '-11' to each side of the equation.
11 + -11 + b2 = 0 + -11

Combine like terms: 11 + -11 = 0
0 + b2 = 0 + -11
b2 = 0 + -11

Combine like terms: 0 + -11 = -11
b2 = -11

Simplifying
b2 = -11

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 '(-11 + b2)' equal to zero and attempt to solve:

Simplifying
-11 + b2 = 0

Solving
-11 + b2 = 0

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

Add '11' to each side of the equation.
-11 + 11 + b2 = 0 + 11

Combine like terms: -11 + 11 = 0
0 + b2 = 0 + 11
b2 = 0 + 11

Combine like terms: 0 + 11 = 11
b2 = 11

Simplifying
b2 = 11

Take the square root of each side:
b = {-3.31662479, 3.31662479}
Solution
b = {-3.31662479, 3.31662479}

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