z^4+(5*z^2)+9=0

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Solution for z^4+(5*z^2)+9=0 equation:


Simplifying
z4 + (5z2) + 9 = 0

Reorder the terms:
9 + (5z2) + z4 = 0

Solving
9 + (5z2) + z4 = 0

Solving for variable 'z'.

Begin completing the square.

Move the constant term to the right:

Add '-9' to each side of the equation.
9 + (5z2) + -9 + z4 = 0 + -9

Reorder the terms:
9 + -9 + (5z2) + z4 = 0 + -9

Combine like terms: 9 + -9 = 0
0 + (5z2) + z4 = 0 + -9
(5z2) + z4 = 0 + -9

Combine like terms: 0 + -9 = -9
(5z2) + z4 = -9

The z term is (5z2).  Take half its coefficient (2.5).
Square it (6.25) and add it to both sides.

Add '6.25' to each side of the equation.
(5z2) + 6.25 + z4 = -9 + 6.25

Reorder the terms:
6.25 + (5z2) + z4 = -9 + 6.25

Combine like terms: -9 + 6.25 = -2.75
6.25 + (5z2) + z4 = -2.75

Factor a perfect square on the left side:
(z2 + 2.5)(z2 + 2.5) = -2.75

Can't calculate square root of the right side.

The solution to this equation could not be determined.

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