2cos^2x+2cosx-3=0

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


Simplifying
2cos2x + 2cosx + -3 = 0

Reorder the terms:
-3 + 2cosx + 2cos2x = 0

Solving
-3 + 2cosx + 2cos2x = 0

Solving for variable 'c'.

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

Add '3' to each side of the equation.
-3 + 2cosx + 3 + 2cos2x = 0 + 3

Reorder the terms:
-3 + 3 + 2cosx + 2cos2x = 0 + 3

Combine like terms: -3 + 3 = 0
0 + 2cosx + 2cos2x = 0 + 3
2cosx + 2cos2x = 0 + 3

Combine like terms: 0 + 3 = 3
2cosx + 2cos2x = 3

Reorder the terms:
-3 + 2cosx + 2cos2x = 3 + -3

Combine like terms: 3 + -3 = 0
-3 + 2cosx + 2cos2x = 0

The solution to this equation could not be determined.

See similar equations:

| t^2-t-22=0 | | 5(2x+4)=3(2x+5) | | 5-3x+7=7-8x+3 | | t^3-23t-22=0 | | t^3-9t^2+16t+22=0 | | 5/9x=-20 | | X^3+y^3=32 | | y+33=5y-15 | | 6-4x-3x=12-11x+3 | | y=cos(2x)-2cosx | | y=2sinx+-1cos(2x) | | y=2sinx-cos(2x) | | 5*(21-4)=15 | | 5x+9=8-2 | | xy=-9+4x | | 56z^2+15z-56=0 | | 10b=2b+24 | | 25b^2-40b-105=0 | | 4d^2-36= | | 8000x=7*12+(7-x)6000 | | -11-4(t-3)= | | 6x^2-41xy+13y^2=0 | | 5m^2+8m+15=0 | | y/x=16 | | P=5n-25 | | 14x^2+99x+7=0 | | 25467+4567= | | 1/2(3.1x10^5*13000^2) | | 1/2(3.1x10^5*13000^2 | | 14x^2+155x+11=0 | | 1/2(3.1x10^5*143000^2) | | y=ln(1+(e^2x)) |

Equations solver categories