20*(y^4)=3200000

Solution for 20*(y^4)=3200000 equation:

Simplifying
20(y4) = 3200000

Solving
20y4 = 3200000

Solving for variable 'y'.

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

Divide each side by '20'.
y4 = 160000

Simplifying
y4 = 160000

Reorder the terms:
-160000 + y4 = 160000 + -160000

Combine like terms: 160000 + -160000 = 0
-160000 + y4 = 0

Factor a difference between two squares.
(400 + y2)(-400 + y2) = 0

Factor a difference between two squares.
(400 + y2)((20 + y)(-20 + y)) = 0

Subproblem 1
Set the factor '(400 + y2)' equal to zero and attempt to solve:

Simplifying
400 + y2 = 0

Solving
400 + y2 = 0

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

Add '-400' to each side of the equation.
400 + -400 + y2 = 0 + -400

Combine like terms: 400 + -400 = 0
0 + y2 = 0 + -400
y2 = 0 + -400

Combine like terms: 0 + -400 = -400
y2 = -400

Simplifying
y2 = -400

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 '(20 + y)' equal to zero and attempt to solve:

Simplifying
20 + y = 0

Solving
20 + y = 0

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

Add '-20' to each side of the equation.
20 + -20 + y = 0 + -20

Combine like terms: 20 + -20 = 0
0 + y = 0 + -20
y = 0 + -20

Combine like terms: 0 + -20 = -20
y = -20

Simplifying
y = -20
Subproblem 3
Set the factor '(-20 + y)' equal to zero and attempt to solve:

Simplifying
-20 + y = 0

Solving
-20 + y = 0

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

Add '20' to each side of the equation.
-20 + 20 + y = 0 + 20

Combine like terms: -20 + 20 = 0
0 + y = 0 + 20
y = 0 + 20

Combine like terms: 0 + 20 = 20
y = 20

Simplifying
y = 20
Solution
y = {-20, 20}