cos(2x)-5cosx+3=o

Solution for cos(2x)-5cosx+3=o equation:

Simplifying
cos(2x) + -5cosx + 3 = o

Remove parenthesis around (2x)
cos * 2x + -5cosx + 3 = o

Reorder the terms for easier multiplication:
2cos * x + -5cosx + 3 = o

Multiply cos * x
2cosx + -5cosx + 3 = o

Reorder the terms:
3 + 2cosx + -5cosx = o

Combine like terms: 2cosx + -5cosx = -3cosx
3 + -3cosx = o

Solving
3 + -3cosx = o

Solving for variable 'c'.

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

Add '-3' to each side of the equation.
3 + -3 + -3cosx = -3 + o

Combine like terms: 3 + -3 = 0
0 + -3cosx = -3 + o
-3cosx = -3 + o

Divide each side by '-3osx'.
c = o-1s-1x-1 + -0.3333333333s-1x-1

Simplifying
c = o-1s-1x-1 + -0.3333333333s-1x-1