3cos^2x-x-1=0

Simple and best practice solution for 3cos^2x-x-1=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 3cos^2x-x-1=0 equation:


Simplifying
3cos2x + -1x + -1 = 0

Reorder the terms:
-1 + 3cos2x + -1x = 0

Solving
-1 + 3cos2x + -1x = 0

Solving for variable 'c'.

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

Add '1' to each side of the equation.
-1 + 3cos2x + 1 + -1x = 0 + 1

Reorder the terms:
-1 + 1 + 3cos2x + -1x = 0 + 1

Combine like terms: -1 + 1 = 0
0 + 3cos2x + -1x = 0 + 1
3cos2x + -1x = 0 + 1

Combine like terms: 0 + 1 = 1
3cos2x + -1x = 1

Add 'x' to each side of the equation.
3cos2x + -1x + x = 1 + x

Combine like terms: -1x + x = 0
3cos2x + 0 = 1 + x
3cos2x = 1 + x

Divide each side by '3os2x'.
c = 0.3333333333o-1s-2x-1 + 0.3333333333o-1s-2

Simplifying
c = 0.3333333333o-1s-2x-1 + 0.3333333333o-1s-2

Reorder the terms:
c = 0.3333333333o-1s-2 + 0.3333333333o-1s-2x-1

See similar equations:

| X^2/25-y^2=1 | | 4x^2/3-3x^1/3=10 | | 30=4y+2y | | 3/x-1/7=5/x | | 15w-6w=54 | | 23-4=15 | | b-32=63 | | 3km*2km= | | 2(m+3)+3m=24 | | =2.5E-6 | | (-12.7z^3-14z)+(-8.9z^3+12z+2)= | | g(-3)=4x-3 | | 60=-16t^2+20t | | -3(2x-3)=(-6x+9) | | 5(y-2)/2=-2y | | -3+x+5=5 | | -2x-(3x+8)=6x-38 | | 12x+4=12x-2 | | x/2.3=6 | | 8x=-12+5 | | -11+x-4=2 | | (6/5x)-(8/x)=2 | | 2z-24=-28+4z | | (w^(1/2))/(w^(1/3)) | | 7t-7=-11+9t | | 3x+3.7x-1x= | | 3360/40 | | (w^(2/3))/(w^(1/3)) | | -(x/3)18 | | 2x^3+3x^2-39x-20=0 | | (2x+2)(x-7)=0 | | 4/3*3.14*6^(3) |

Equations solver categories