4cos^2x-4cosx-1=o

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Solution for 4cos^2x-4cosx-1=o equation: 


Simplifying
4cos2x + -4cosx + -1 = o

Reorder the terms:
-1 + -4cosx + 4cos2x = o

Solving
-1 + -4cosx + 4cos2x = o

Solving for variable 'c'.

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

Add '1' to each side of the equation.
-1 + -4cosx + 1 + 4cos2x = 1 + o

Reorder the terms:
-1 + 1 + -4cosx + 4cos2x = 1 + o

Combine like terms: -1 + 1 = 0
0 + -4cosx + 4cos2x = 1 + o
-4cosx + 4cos2x = 1 + o

Reorder the terms:
-1 + -4cosx + 4cos2x + -1o = 1 + o + -1 + -1o

Reorder the terms:
-1 + -4cosx + 4cos2x + -1o = 1 + -1 + o + -1o

Combine like terms: 1 + -1 = 0
-1 + -4cosx + 4cos2x + -1o = 0 + o + -1o
-1 + -4cosx + 4cos2x + -1o = o + -1o

Combine like terms: o + -1o = 0
-1 + -4cosx + 4cos2x + -1o = 0

The solution to this equation could not be determined.

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