0=cos^2x-5cosx+1

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Solution for 0=cos^2x-5cosx+1 equation:


Simplifying
0 = cos2x + -5cosx + 1

Reorder the terms:
0 = 1 + -5cosx + cos2x

Solving
0 = 1 + -5cosx + cos2x

Solving for variable 'c'.

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

Add '5cosx' to each side of the equation.
0 + 5cosx = 1 + -5cosx + 5cosx + cos2x
Remove the zero:
5cosx = 1 + -5cosx + 5cosx + cos2x

Combine like terms: -5cosx + 5cosx = 0
5cosx = 1 + 0 + cos2x
5cosx = 1 + cos2x

Add '-1cos2x' to each side of the equation.
5cosx + -1cos2x = 1 + cos2x + -1cos2x

Combine like terms: cos2x + -1cos2x = 0
5cosx + -1cos2x = 1 + 0
5cosx + -1cos2x = 1

Reorder the terms:
-1 + 5cosx + -1cos2x = 1 + -1

Combine like terms: 1 + -1 = 0
-1 + 5cosx + -1cos2x = 0

The solution to this equation could not be determined.

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