cos(2*x)-(3*cosx)+2=0

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


Simplifying
cos(2x) + -1(3cosx) + 2 = 0

Remove parenthesis around (2x)
cos * 2x + -1(3cosx) + 2 = 0

Reorder the terms for easier multiplication:
2cos * x + -1(3cosx) + 2 = 0

Multiply cos * x
2cosx + -1(3cosx) + 2 = 0

Remove parenthesis around (3cosx)
2cosx + -1 * 3cosx + 2 = 0

Multiply -1 * 3
2cosx + -3cosx + 2 = 0

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

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

Solving
2 + -1cosx = 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 + -2 + -1cosx = 0 + -2

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

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

Divide each side by '-1osx'.
c = 2o-1s-1x-1

Simplifying
c = 2o-1s-1x-1

See similar equations:

| 4(y+1)+3y-1=7y+3 | | 3(v-6)-5v= | | 28-18=5(x-5) | | (9+z)(5z-8)=0 | | F(15)=0.76x+42.39 | | 5-2a/3=5/11 | | 725+125=x | | 23z=18z+35 | | 3x^2+2x^5= | | (5u-4)(7+u)=0 | | 1.2a-4.8a=3 | | (-3+3w+3x)(-4)= | | x-2x*lnx=0 | | 14n/9-4/9=16/9 | | 15x+8=34+4x | | X=3.14V | | 7-3x-4+6x=18 | | 5147869548599692+1=5147869548599693 | | 15+-4= | | 2x-15x^2=0 | | -15+-4= | | -4+-15= | | (3C)-4= | | 2x+3(x-2)=x+22 | | 9n+2/3=4 | | -4(6w-4u-3)= | | 3y=4x-13 | | -(4x-15)+4(6x+5)= | | 32x^4-50=0 | | z-2/5=3.5 | | 1-3/5=-8 | | (x-6)(x-3i)(x+3i)(x-(1+2i))(x-(1-2i))=60 |

Equations solver categories