2cos^2x+9cosx=5

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Solution for 2cos^2x+9cosx=5 equation: 


Simplifying
2cos2x + 9cosx = 5

Reorder the terms:
9cosx + 2cos2x = 5

Solving
9cosx + 2cos2x = 5

Solving for variable 'c'.

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

Reorder the terms:
-5 + 9cosx + 2cos2x = 5 + -5

Combine like terms: 5 + -5 = 0
-5 + 9cosx + 2cos2x = 0

The solution to this equation could not be determined.

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