F(x)=3cos^2x+8cosx-3

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Solution for F(x)=3cos^2x+8cosx-3 equation:


Simplifying
F(x) = 3cos2x + 8cosx + -3

Multiply F * x
xF = 3cos2x + 8cosx + -3

Reorder the terms:
xF = -3 + 8cosx + 3cos2x

Solving
xF = -3 + 8cosx + 3cos2x

Solving for variable 'x'.

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

Add '-8cosx' to each side of the equation.
-8cosx + xF = -3 + 8cosx + -8cosx + 3cos2x

Combine like terms: 8cosx + -8cosx = 0
-8cosx + xF = -3 + 0 + 3cos2x
-8cosx + xF = -3 + 3cos2x

Add '-3cos2x' to each side of the equation.
-8cosx + -3cos2x + xF = -3 + 3cos2x + -3cos2x

Combine like terms: 3cos2x + -3cos2x = 0
-8cosx + -3cos2x + xF = -3 + 0
-8cosx + -3cos2x + xF = -3

Reorder the terms:
3 + -8cosx + -3cos2x + xF = -3 + 3

Combine like terms: -3 + 3 = 0
3 + -8cosx + -3cos2x + xF = 0

The solution to this equation could not be determined.

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