6cos^2x+3cosx-3=0

Simple and best practice solution for 6cos^2x+3cosx-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 6cos^2x+3cosx-3=0 equation:


Simplifying
6cos2x + 3cosx + -3 = 0

Reorder the terms:
-3 + 3cosx + 6cos2x = 0

Solving
-3 + 3cosx + 6cos2x = 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 + 3cosx + 3 + 6cos2x = 0 + 3

Reorder the terms:
-3 + 3 + 3cosx + 6cos2x = 0 + 3

Combine like terms: -3 + 3 = 0
0 + 3cosx + 6cos2x = 0 + 3
3cosx + 6cos2x = 0 + 3

Combine like terms: 0 + 3 = 3
3cosx + 6cos2x = 3

Reorder the terms:
-3 + 3cosx + 6cos2x = 3 + -3

Combine like terms: 3 + -3 = 0
-3 + 3cosx + 6cos2x = 0

Factor out the Greatest Common Factor (GCF), '3'.
3(-1 + cosx + 2cos2x) = 0

Ignore the factor 3.

Subproblem 1

Set the factor '(-1 + cosx + 2cos2x)' equal to zero and attempt to solve: Simplifying -1 + cosx + 2cos2x = 0 Solving -1 + cosx + 2cos2x = 0 Move all terms containing c to the left, all other terms to the right. Add '1' to each side of the equation. -1 + cosx + 1 + 2cos2x = 0 + 1 Reorder the terms: -1 + 1 + cosx + 2cos2x = 0 + 1 Combine like terms: -1 + 1 = 0 0 + cosx + 2cos2x = 0 + 1 cosx + 2cos2x = 0 + 1 Combine like terms: 0 + 1 = 1 cosx + 2cos2x = 1 The solution to this equation could not be determined. This subproblem is being ignored because a solution could not be determined. The solution to this equation could not be determined.

See similar equations:

| -20=7-3(2x-1) | | 5y-5-2y+1=0 | | -7-4x-7x=-84 | | 3x+9-8(x+1)=4x+3 | | -6p+8p+13=-7-8p | | (n+1)n(n-1)=504 | | X+1=7x-4 | | x-27=-42 | | 4m-4+6m=26 | | -5-3v=v+7 | | 3x+4=5(-8) | | -3z-10=5 | | x(3x)=800 | | 5p-8p-22=4 | | 7v-2+4+4=2+8v | | 4x^2-28x+7=0 | | Senx+cosx=4x^2 | | 7r-2r(2r*3)-2=2r^2(r-2)(3+6r)-8 | | 3+4b+b=b-5 | | X-3=5.5 | | 14-8r=-1+7r | | 18=-6x-12 | | w^2-23w+42=0 | | 17-11= | | Y=10x+4x | | 4m+3m= | | 14/x-3=4 | | 3x-5x+2-3=5 | | 3n-7=28 | | -10+7n=6n+6n | | 2x+2=8x-5 | | 5t+3=2y+15 |

Equations solver categories