2cos^2x+5cosx=-2

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Solution for 2cos^2x+5cosx=-2 equation: 


Simplifying
2cos2x + 5cosx = -2

Reorder the terms:
5cosx + 2cos2x = -2

Solving
5cosx + 2cos2x = -2

Solving for variable 'c'.

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

Reorder the terms:
2 + 5cosx + 2cos2x = -2 + 2

Combine like terms: -2 + 2 = 0
2 + 5cosx + 2cos2x = 0

The solution to this equation could not be determined.

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