cos*4*x-7*cos*2*x-8=0

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Solution for cos*4*x-7*cos*2*x-8=0 equation:


Simplifying
cos * 4x + -7cos * 2x + -8 = 0

Reorder the terms for easier multiplication:
4cos * x + -7cos * 2x + -8 = 0

Multiply cos * x
4cosx + -7cos * 2x + -8 = 0

Reorder the terms for easier multiplication:
4cosx + -7 * 2cos * x + -8 = 0

Multiply -7 * 2
4cosx + -14cos * x + -8 = 0

Multiply cos * x
4cosx + -14cosx + -8 = 0

Reorder the terms:
-8 + 4cosx + -14cosx = 0

Combine like terms: 4cosx + -14cosx = -10cosx
-8 + -10cosx = 0

Solving
-8 + -10cosx = 0

Solving for variable 'c'.

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

Add '8' to each side of the equation.
-8 + 8 + -10cosx = 0 + 8

Combine like terms: -8 + 8 = 0
0 + -10cosx = 0 + 8
-10cosx = 0 + 8

Combine like terms: 0 + 8 = 8
-10cosx = 8

Divide each side by '-10osx'.
c = -0.8o-1s-1x-1

Simplifying
c = -0.8o-1s-1x-1

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