Cos^2x+6cosx+4=0

Simple and best practice solution for Cos^2x+6cosx+4=0 equation. Check how easy it is, and learn it for the future. Our solution is simple, and easy to understand, so don`t hesitate to use it as a solution of your homework.

If it's not what You are looking for type in the equation solver your own equation and let us solve it.

Solution for Cos^2x+6cosx+4=0 equation: 


Simplifying
Cos2x + 6cosx + 4 = 0

Reorder the terms:
4 + 6cosx + os2xC = 0

Solving
4 + 6cosx + os2xC = 0

Solving for variable 'c'.

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

Add '-4' to each side of the equation.
4 + 6cosx + -4 + os2xC = 0 + -4

Reorder the terms:
4 + -4 + 6cosx + os2xC = 0 + -4

Combine like terms: 4 + -4 = 0
0 + 6cosx + os2xC = 0 + -4
6cosx + os2xC = 0 + -4

Combine like terms: 0 + -4 = -4
6cosx + os2xC = -4

Add '-1os2xC' to each side of the equation.
6cosx + os2xC + -1os2xC = -4 + -1os2xC

Combine like terms: os2xC + -1os2xC = 0
6cosx + 0 = -4 + -1os2xC
6cosx = -4 + -1os2xC

Divide each side by '6osx'.
c = -0.6666666667o-1s-1x-1 + -0.1666666667sC

Simplifying
c = -0.6666666667o-1s-1x-1 + -0.1666666667sC

See similar equations:

| 8(x-4)=8(x+7) | | 3(5+96)= | | 16.666/100 | | 14x-22=6 | | 9(4y-3)-13y=4(27+5Y) | | 37+32x+50x=23+96x | | 4x-28/6-2x | | 12+9x=4+11x | | 24+10x=13x+12 | | -3-(7.5+4)= | | 4x-28/2x-6 | | 4x-2/6-2x | | 4+10x-12+8=15x | | -7x+y=14 | | 7+5(-1+2x)=32+3x-40 | | (2x-1)/(7x)=7/6-3/x | | (x^4-4)(x^4+27ix)=0 | | ln*15-ln*(x+1)=2 | | 11x-7+114=180 | | y+2=16y | | 7+5(-1+2x-5)=32+3x-40 | | X-9/2 | | 3(x+2)=4x+x-8 | | 250x+100=850 | | 6-7=2z-2 | | -(-x-7)+4(7-x)=6(x-2)-3(3-x) | | 4x^2-11x-9=0 | | (x-8)=12 | | 2q*q+8*q=3 | | -0.5x=ln(-20x) | | x=4-5(x-2) | | 30x+20=90 |

Equations solver categories