p^4-81=0

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Solution for p^4-81=0 equation:


Simplifying
p4 + -81 = 0

Reorder the terms:
-81 + p4 = 0

Solving
-81 + p4 = 0

Solving for variable 'p'.

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

Add '81' to each side of the equation.
-81 + 81 + p4 = 0 + 81

Combine like terms: -81 + 81 = 0
0 + p4 = 0 + 81
p4 = 0 + 81

Combine like terms: 0 + 81 = 81
p4 = 81

Simplifying
p4 = 81

Reorder the terms:
-81 + p4 = 81 + -81

Combine like terms: 81 + -81 = 0
-81 + p4 = 0

Factor a difference between two squares.
(9 + p2)(-9 + p2) = 0

Factor a difference between two squares.
(9 + p2)((3 + p)(-3 + p)) = 0

Subproblem 1

Set the factor '(9 + p2)' equal to zero and attempt to solve: Simplifying 9 + p2 = 0 Solving 9 + p2 = 0 Move all terms containing p to the left, all other terms to the right. Add '-9' to each side of the equation. 9 + -9 + p2 = 0 + -9 Combine like terms: 9 + -9 = 0 0 + p2 = 0 + -9 p2 = 0 + -9 Combine like terms: 0 + -9 = -9 p2 = -9 Simplifying p2 = -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 + p)' equal to zero and attempt to solve: Simplifying 3 + p = 0 Solving 3 + p = 0 Move all terms containing p to the left, all other terms to the right. Add '-3' to each side of the equation. 3 + -3 + p = 0 + -3 Combine like terms: 3 + -3 = 0 0 + p = 0 + -3 p = 0 + -3 Combine like terms: 0 + -3 = -3 p = -3 Simplifying p = -3

Subproblem 3

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

Solution

p = {-3, 3}

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