5z^2-4z^4-4=0

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Solution for 5z^2-4z^4-4=0 equation:


Simplifying
5z2 + -4z4 + -4 = 0

Reorder the terms:
-4 + 5z2 + -4z4 = 0

Solving
-4 + 5z2 + -4z4 = 0

Solving for variable 'z'.

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

Divide each side by '-4'.
1 + -1.25z2 + z4 = 0

Move the constant term to the right:

Add '-1' to each side of the equation.
1 + -1.25z2 + -1 + z4 = 0 + -1

Reorder the terms:
1 + -1 + -1.25z2 + z4 = 0 + -1

Combine like terms: 1 + -1 = 0
0 + -1.25z2 + z4 = 0 + -1
-1.25z2 + z4 = 0 + -1

Combine like terms: 0 + -1 = -1
-1.25z2 + z4 = -1

The z term is -1.25z2.  Take half its coefficient (-0.625).
Square it (0.390625) and add it to both sides.

Add '0.390625' to each side of the equation.
-1.25z2 + 0.390625 + z4 = -1 + 0.390625

Reorder the terms:
0.390625 + -1.25z2 + z4 = -1 + 0.390625

Combine like terms: -1 + 0.390625 = -0.609375
0.390625 + -1.25z2 + z4 = -0.609375

Factor a perfect square on the left side:
(z2 + -0.625)(z2 + -0.625) = -0.609375

Can't calculate square root of the right side.

The solution to this equation could not be determined.

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