cos^2(x)+4cos(x)-2=0

Simple and best practice solution for cos^2(x)+4cos(x)-2=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 cos^2(x)+4cos(x)-2=0 equation:


Simplifying
cos2(x) + 4cos(x) + -2 = 0

Multiply cos2 * x
cos2x + 4cos(x) + -2 = 0

Multiply cos * x
cos2x + 4cosx + -2 = 0

Reorder the terms:
-2 + 4cosx + cos2x = 0

Solving
-2 + 4cosx + cos2x = 0

Solving for variable 'c'.

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

Add '2' to each side of the equation.
-2 + 4cosx + 2 + cos2x = 0 + 2

Reorder the terms:
-2 + 2 + 4cosx + cos2x = 0 + 2

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

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

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

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

The solution to this equation could not be determined.

See similar equations:

| -9x+98=8 | | 9(x+4)-2(-3x+7)= | | 2(9j-4k)= | | 23-n-6n=13+2n | | 1x-5=6x-9 | | 6x+48=12 | | m+(-6)=-1 | | 4q=3 | | 8x-3x+7=x-2+9 | | 2+2(7r-2)= | | 1.598+1.01=9 | | -5(4y-5)-y=-2(y-3) | | 26x+10=5(5x+8) | | 6x-8x+4=x-5+9 | | -7(3x+5)+2= | | 18x^2+21x+30x+35=0 | | 7u=-14 | | 0.4c+0.8c-6=c+7 | | 100=x-1 | | -1=2+p/3 | | 100-50+50+100-200+100=? | | 9x-8=1+6x | | 23x=15x+200 | | y=5+(-11x) | | 4p-2(6-3p)=6(p-5)-22 | | 5+9(x-9)=11-7(x-6) | | 100x+1400=80x | | y=5-11x | | y=5-11x | | 4y-77=23 | | -2+u=-3 | | 60x+400=50x |

Equations solver categories