B^4-81=

Solution for B^4-81= equation:

Simplifying
B4 + -81 = 0

Reorder the terms:
-81 + B4 = 0

Solving
-81 + B4 = 0

Solving for variable 'B'.

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

Add '81' to each side of the equation.
-81 + 81 + B4 = 0 + 81

Combine like terms: -81 + 81 = 0
0 + B4 = 0 + 81
B4 = 0 + 81

Combine like terms: 0 + 81 = 81
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}