(-4y^4)-(4y^2)+1=0

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Solution for (-4y^4)-(4y^2)+1=0 equation:


Simplifying
(-4y4) + -1(4y2) + 1 = 0

Remove parenthesis around (4y2)
(-4y4) + -1 * 4y2 + 1 = 0

Multiply -1 * 4
(-4y4) + -4y2 + 1 = 0

Reorder the terms:
1 + -4y2 + (-4y4) = 0

Solving
1 + -4y2 + (-4y4) = 0

Solving for variable 'y'.

Begin completing the square.  Divide all terms by
-4 the coefficient of the squared term: 

Divide each side by '-4'.
-0.25 + y2 + y4 = 0

Move the constant term to the right:

Add '0.25' to each side of the equation.
-0.25 + y2 + 0.25 + y4 = 0 + 0.25

Reorder the terms:
-0.25 + 0.25 + y2 + y4 = 0 + 0.25

Combine like terms: -0.25 + 0.25 = 0.00
0.00 + y2 + y4 = 0 + 0.25
y2 + y4 = 0 + 0.25

Combine like terms: 0 + 0.25 = 0.25
y2 + y4 = 0.25

The y term is y2.  Take half its coefficient (0.5).
Square it (0.25) and add it to both sides.

Add '0.25' to each side of the equation.
 + 0.25 + y4 = 0.25 + 0.25

Combine like terms:  + 0.25 = 1.25
1.25 + y4 = 0.25 + 0.25

Combine like terms: 0.25 + 0.25 = 0.5
1.25 + y4 = 0.5

Factor a perfect square on the left side:
((y2) + 0.5)((y2) + 0.5) = 0.5

Calculate the square root of the right side: 0.707106781

Break this problem into two subproblems by setting 
((y2) + 0.5) equal to 0.707106781 and -0.707106781.

Subproblem 1

(y2) + 0.5 = 0.707106781 Simplifying (y2) + 0.5 = 0.707106781 y2 + 0.5 = 0.707106781 Reorder the terms: 0.5 + y2 = 0.707106781 Solving 0.5 + y2 = 0.707106781 Solving for variable 'y'. Move all terms containing y to the left, all other terms to the right. Add '-0.5' to each side of the equation. 0.5 + -0.5 + y2 = 0.707106781 + -0.5 Combine like terms: 0.5 + -0.5 = 0.0 0.0 + y2 = 0.707106781 + -0.5 y2 = 0.707106781 + -0.5 Combine like terms: 0.707106781 + -0.5 = 0.207106781 y2 = 0.207106781 Simplifying y2 = 0.207106781 Take the square root of each side: y = {-0.45508986, 0.45508986}

Subproblem 2

(y2) + 0.5 = -0.707106781 Simplifying (y2) + 0.5 = -0.707106781 y2 + 0.5 = -0.707106781 Reorder the terms: 0.5 + y2 = -0.707106781 Solving 0.5 + y2 = -0.707106781 Solving for variable 'y'. Move all terms containing y to the left, all other terms to the right. Add '-0.5' to each side of the equation. 0.5 + -0.5 + y2 = -0.707106781 + -0.5 Combine like terms: 0.5 + -0.5 = 0.0 0.0 + y2 = -0.707106781 + -0.5 y2 = -0.707106781 + -0.5 Combine like terms: -0.707106781 + -0.5 = -1.207106781 y2 = -1.207106781 Simplifying y2 = -1.207106781 Reorder the terms: 1.207106781 + y2 = -1.207106781 + 1.207106781 Combine like terms: -1.207106781 + 1.207106781 = 0.000000000 1.207106781 + y2 = 0.000000000 The solution to this equation could not be determined.This subproblem is being ignored because a solution could not be determined. The solution to this equation could not be determined.

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