12cos^2(x)+8cos(x)-20=0

Simple and best practice solution for 12cos^2(x)+8cos(x)-20=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 12cos^2(x)+8cos(x)-20=0 equation:


Simplifying
12cos2(x) + 8cos(x) + -20 = 0

Multiply cos2 * x
12cos2x + 8cos(x) + -20 = 0

Multiply cos * x
12cos2x + 8cosx + -20 = 0

Reorder the terms:
-20 + 8cosx + 12cos2x = 0

Solving
-20 + 8cosx + 12cos2x = 0

Solving for variable 'c'.

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

Add '20' to each side of the equation.
-20 + 8cosx + 20 + 12cos2x = 0 + 20

Reorder the terms:
-20 + 20 + 8cosx + 12cos2x = 0 + 20

Combine like terms: -20 + 20 = 0
0 + 8cosx + 12cos2x = 0 + 20
8cosx + 12cos2x = 0 + 20

Combine like terms: 0 + 20 = 20
8cosx + 12cos2x = 20

Reorder the terms:
-20 + 8cosx + 12cos2x = 20 + -20

Combine like terms: 20 + -20 = 0
-20 + 8cosx + 12cos2x = 0

Factor out the Greatest Common Factor (GCF), '4'.
4(-5 + 2cosx + 3cos2x) = 0

Ignore the factor 4.

Subproblem 1

Set the factor '(-5 + 2cosx + 3cos2x)' equal to zero and attempt to solve: Simplifying -5 + 2cosx + 3cos2x = 0 Solving -5 + 2cosx + 3cos2x = 0 Move all terms containing c to the left, all other terms to the right. Add '5' to each side of the equation. -5 + 2cosx + 5 + 3cos2x = 0 + 5 Reorder the terms: -5 + 5 + 2cosx + 3cos2x = 0 + 5 Combine like terms: -5 + 5 = 0 0 + 2cosx + 3cos2x = 0 + 5 2cosx + 3cos2x = 0 + 5 Combine like terms: 0 + 5 = 5 2cosx + 3cos2x = 5 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:

| 56x+20y=1900 | | 8-7p=10p | | (6b+1)(2b-4)= | | 2x^2+2y^2+4xy-4=0 | | (9c/10b)/(3c/2b^3c4)= | | 9c/10b= | | 30=67t-5t^2 | | 0.53KG=XG | | 2ln(r)=ln(15r+34) | | 0=130-6t-16t^2 | | 2(3X-2)=4x-14 | | 21=5+34t-16t^2 | | -3+.5y=4x+11 | | f(0)=4x-16 | | 2(u-4)-7u=-13 | | 2y-4+xy-2x= | | 7.6x-2=6.6x | | 9+2x=y+3 | | 7x+4-3+12= | | x/4-0.5=6 | | x/5-0.5=6 | | 3n-4-5n+6=-8 | | p-2/4=3 | | 4/3y=24 | | (w-7)(3w+7)=0 | | 3*0-6y=12 | | 5(x+4)-2(x-3)= | | p-5/4=3 | | t/5-6=7 | | 31n(x+6)=9 | | (a-4)(5a+3)(a+4)= | | 12=160-12t-16t^2 |

Equations solver categories