2cos(2x)+5cos(x)+3=0

Simple and best practice solution for 2cos(2x)+5cos(x)+3=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 2cos(2x)+5cos(x)+3=0 equation:


Simplifying
2cos(2x) + 5cos(x) + 3 = 0

Remove parenthesis around (2x)
2cos * 2x + 5cos(x) + 3 = 0

Reorder the terms for easier multiplication:
2 * 2cos * x + 5cos(x) + 3 = 0

Multiply 2 * 2
4cos * x + 5cos(x) + 3 = 0

Multiply cos * x
4cosx + 5cos(x) + 3 = 0

Multiply cos * x
4cosx + 5cosx + 3 = 0

Reorder the terms:
3 + 4cosx + 5cosx = 0

Combine like terms: 4cosx + 5cosx = 9cosx
3 + 9cosx = 0

Solving
3 + 9cosx = 0

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 + 9cosx = 0 + -3

Combine like terms: 3 + -3 = 0
0 + 9cosx = 0 + -3
9cosx = 0 + -3

Combine like terms: 0 + -3 = -3
9cosx = -3

Divide each side by '9osx'.
c = -0.3333333333o-1s-1x-1

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

See similar equations:

| 55=7+4x | | 11r^3+3s^2= | | 48-12y+4y=8 | | -8x-3y-23=0 | | -21=-9+2y | | -2(5+x)=23 | | 65=14c+23 | | -12x^4-42x^3+63x=12x^2+63 | | 23*5+20=x | | 65=14c-23 | | 4R-9=19 | | 0=5x-18+6y | | s+s-8+4s-8=26 | | -2x^4-7x^3-2x^2+7=0 | | 16x+1=15x+7 | | 72x^4+192x^2-384=0 | | 3-7=-1 | | 13x-6y=-42 | | 16x+1+15x+7=180 | | 9p=10p-10 | | 5y=3(5-2y)+-15 | | 16t^2-16t^2= | | X+0.2y=10 | | 6-8r=14 | | 9(2-4x-2x)+5(9x+9)=27 | | 3+10x=83 | | 8+3n=17 | | 16x-2+110=180 | | p+215-1001=-9412 | | -7d-6=-8d | | 2x-34=16 | | -1+14x+12x+17=125 |

Equations solver categories