Cos^2x+3cosx+2=0

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Solution for Cos^2x+3cosx+2=0 equation: 


Simplifying
Cos2x + 3cosx + 2 = 0

Reorder the terms:
2 + 3cosx + os2xC = 0

Solving
2 + 3cosx + os2xC = 0

Solving for variable 'c'.

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

Add '-2' to each side of the equation.
2 + 3cosx + -2 + os2xC = 0 + -2

Reorder the terms:
2 + -2 + 3cosx + os2xC = 0 + -2

Combine like terms: 2 + -2 = 0
0 + 3cosx + os2xC = 0 + -2
3cosx + os2xC = 0 + -2

Combine like terms: 0 + -2 = -2
3cosx + os2xC = -2

Add '-1os2xC' to each side of the equation.
3cosx + os2xC + -1os2xC = -2 + -1os2xC

Combine like terms: os2xC + -1os2xC = 0
3cosx + 0 = -2 + -1os2xC
3cosx = -2 + -1os2xC

Divide each side by '3osx'.
c = -0.6666666667o-1s-1x-1 + -0.3333333333sC

Simplifying
c = -0.6666666667o-1s-1x-1 + -0.3333333333sC

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