8cos^2x=4cosx

Simple and best practice solution for 8cos^2x=4cosx 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 8cos^2x=4cosx equation:


Simplifying
8cos2x = 4cosx

Solving
8cos2x = 4cosx

Solving for variable 'c'.

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

Add '-4cosx' to each side of the equation.
-4cosx + 8cos2x = 4cosx + -4cosx

Combine like terms: 4cosx + -4cosx = 0
-4cosx + 8cos2x = 0

Factor out the Greatest Common Factor (GCF), '4cosx'.
4cosx(-1 + 2s) = 0

Ignore the factor 4.

Subproblem 1

Set the factor 'cosx' equal to zero and attempt to solve: Simplifying cosx = 0 Solving cosx = 0 Move all terms containing c to the left, all other terms to the right. Simplifying cosx = 0 The solution to this equation could not be determined. This subproblem is being ignored because a solution could not be determined.

Subproblem 2

Set the factor '(-1 + 2s)' equal to zero and attempt to solve: Simplifying -1 + 2s = 0 Solving -1 + 2s = 0 Move all terms containing c to the left, all other terms to the right. Add '1' to each side of the equation. -1 + 1 + 2s = 0 + 1 Combine like terms: -1 + 1 = 0 0 + 2s = 0 + 1 2s = 0 + 1 Combine like terms: 0 + 1 = 1 2s = 1 Add '-2s' to each side of the equation. 2s + -2s = 1 + -2s Combine like terms: 2s + -2s = 0 0 = 1 + -2s Simplifying 0 = 1 + -2s 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:

| 8+4(t-3)=2(t+8)+4 | | s^2+s=2 | | 28+2y=4y-16 | | X-(x+3)=x+6 | | 8c^2=8c | | 5x-2(x+1)=x-10 | | 8n+4+19=1 | | 15x^2+21x=0 | | 4x^2-24x-64=0 | | -6x-4-5x=18 | | 3x^2+75=4x^2+10x | | 5x+20=170 | | x^2+14=2 | | 10+3x+x=5 | | -12.9=5+7+3d | | Ln(2x+1)=8 | | x^2+4xy=12 | | 16=q-5 | | 7x^2-13=-20 | | -7x-12=30 | | -x-24=-17 | | -49t^2+80t=0 | | 3x+2=3x+3 | | 2x^2-2=10x-2 | | 2y=45x-23y | | -36=6(2-8x) | | 2+3x= | | -24=5x+3x | | x^3-10x^2+25= | | 3x-(-10)=1 | | 2t^2+13t-18= | | -(14n-8)=-(9n-8)-5n |

Equations solver categories