2cos(2x)+1=0equation

Solution for 2cos(2x)+1=0equation equation:

Simplifying
2cos(2x) + 1 = 0equation

Remove parenthesis around (2x)
2cos * 2x + 1 = 0equation

Reorder the terms for easier multiplication:
2 * 2cos * x + 1 = 0equation

Multiply 2 * 2
4cos * x + 1 = 0equation

Multiply cos * x
4cosx + 1 = 0equation

Reorder the terms:
1 + 4cosx = 0equation

Anything times zero is zero.
1 + 4cosx = 0aeinoqtu

Solving
1 + 4cosx = 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 + -1 + 4cosx = 0 + -1

Combine like terms: 1 + -1 = 0
0 + 4cosx = 0 + -1
4cosx = 0 + -1

Combine like terms: 0 + -1 = -1
4cosx = -1

Divide each side by '4osx'.
c = -0.25o-1s-1x-1

Simplifying
c = -0.25o-1s-1x-1