162=2r^4

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Solution for 162=2r^4 equation:


Simplifying
162 = 2r4

Solving
162 = 2r4

Solving for variable 'r'.

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

Add '-2r4' to each side of the equation.
162 + -2r4 = 2r4 + -2r4

Combine like terms: 2r4 + -2r4 = 0
162 + -2r4 = 0

Add '-162' to each side of the equation.
162 + -162 + -2r4 = 0 + -162

Combine like terms: 162 + -162 = 0
0 + -2r4 = 0 + -162
-2r4 = 0 + -162

Combine like terms: 0 + -162 = -162
-2r4 = -162

Divide each side by '-2'.
r4 = 81

Simplifying
r4 = 81

Reorder the terms:
-81 + r4 = 81 + -81

Combine like terms: 81 + -81 = 0
-81 + r4 = 0

Factor a difference between two squares.
(9 + r2)(-9 + r2) = 0

Factor a difference between two squares.
(9 + r2)((3 + r)(-3 + r)) = 0

Subproblem 1

Set the factor '(9 + r2)' equal to zero and attempt to solve: Simplifying 9 + r2 = 0 Solving 9 + r2 = 0 Move all terms containing r to the left, all other terms to the right. Add '-9' to each side of the equation. 9 + -9 + r2 = 0 + -9 Combine like terms: 9 + -9 = 0 0 + r2 = 0 + -9 r2 = 0 + -9 Combine like terms: 0 + -9 = -9 r2 = -9 Simplifying r2 = -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 + r)' equal to zero and attempt to solve: Simplifying 3 + r = 0 Solving 3 + r = 0 Move all terms containing r to the left, all other terms to the right. Add '-3' to each side of the equation. 3 + -3 + r = 0 + -3 Combine like terms: 3 + -3 = 0 0 + r = 0 + -3 r = 0 + -3 Combine like terms: 0 + -3 = -3 r = -3 Simplifying r = -3

Subproblem 3

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

Solution

r = {-3, 3}

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