cos^2x+4cosx+4=0

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Solution for cos^2x+4cosx+4=0 equation:


Simplifying
cos2x + 4cosx + 4 = 0

Reorder the terms:
4 + 4cosx + cos2x = 0

Solving
4 + 4cosx + cos2x = 0

Solving for variable 'c'.

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

Add '-4' to each side of the equation.
4 + 4cosx + -4 + cos2x = 0 + -4

Reorder the terms:
4 + -4 + 4cosx + cos2x = 0 + -4

Combine like terms: 4 + -4 = 0
0 + 4cosx + cos2x = 0 + -4
4cosx + cos2x = 0 + -4

Combine like terms: 0 + -4 = -4
4cosx + cos2x = -4

Reorder the terms:
4 + 4cosx + cos2x = -4 + 4

Combine like terms: -4 + 4 = 0
4 + 4cosx + cos2x = 0

The solution to this equation could not be determined.

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