16x^8+8x^4+65=

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Solution for 16x^8+8x^4+65= equation:


Simplifying
16x8 + 8x4 + 65 = 0

Reorder the terms:
65 + 8x4 + 16x8 = 0

Solving
65 + 8x4 + 16x8 = 0

Solving for variable 'x'.

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

Divide each side by '16'.
4.0625 + 0.5x4 + x8 = 0

Move the constant term to the right:

Add '-4.0625' to each side of the equation.
4.0625 + 0.5x4 + -4.0625 + x8 = 0 + -4.0625

Reorder the terms:
4.0625 + -4.0625 + 0.5x4 + x8 = 0 + -4.0625

Combine like terms: 4.0625 + -4.0625 = 0.0000
0.0000 + 0.5x4 + x8 = 0 + -4.0625
0.5x4 + x8 = 0 + -4.0625

Combine like terms: 0 + -4.0625 = -4.0625
0.5x4 + x8 = -4.0625

The x term is 0.5x4.  Take half its coefficient (0.25).
Square it (0.0625) and add it to both sides.

Add '0.0625' to each side of the equation.
0.5x4 + 0.0625 + x8 = -4.0625 + 0.0625

Reorder the terms:
0.0625 + 0.5x4 + x8 = -4.0625 + 0.0625

Combine like terms: -4.0625 + 0.0625 = -4
0.0625 + 0.5x4 + x8 = -4

Factor a perfect square on the left side:
(x4 + 0.25)(x4 + 0.25) = -4

Can't calculate square root of the right side.

The solution to this equation could not be determined.

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