4cos^2x=9cosx-2

Simple and best practice solution for 4cos^2x=9cosx-2 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 4cos^2x=9cosx-2 equation:


Simplifying
4cos2x = 9cosx + -2

Reorder the terms:
4cos2x = -2 + 9cosx

Solving
4cos2x = -2 + 9cosx

Solving for variable 'c'.

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

Add '-9cosx' to each side of the equation.
-9cosx + 4cos2x = -2 + 9cosx + -9cosx

Combine like terms: 9cosx + -9cosx = 0
-9cosx + 4cos2x = -2 + 0
-9cosx + 4cos2x = -2

Reorder the terms:
2 + -9cosx + 4cos2x = -2 + 2

Combine like terms: -2 + 2 = 0
2 + -9cosx + 4cos2x = 0

The solution to this equation could not be determined.

See similar equations:

| 31=3x-4 | | 16k-12k-3k+3=15 | | .25s+20=-.5s-4 | | 8x+-8y+-10+-8x= | | 3x-2+5=90 | | 2x+69=8x-3 | | 10(c+6.2)=102 | | .25s+20=-.5-4 | | 28=2x-4 | | 5.5x=38.5 | | -35+4(2x+5)=-61 | | 39-8n=-24-32+3n | | -42=-6(m-6)-7m | | 20b+3b-23b+4b+b=20 | | -22=5x-2 | | ax^2+4x+c=0 | | -100=b-72 | | -2k^2-9k+9=0 | | y^5+8y^2=0 | | 50/54 | | y-0=-.5(x+3) | | 4x+1=7-7x | | 25+0.5b=47 | | (2x-20)+(4x-10)=90 | | 3x+2(50-x)=10 | | A=zt+zfort | | 2(-4-7x)=6 | | 20x=22z-58 | | 4x+7y+4x+-7y= | | x+8=4x-31 | | -11+5=-30+4 | | 35/168 |

Equations solver categories