4cos^2(x)-9cos(x)+5=0

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Solution for 4cos^2(x)-9cos(x)+5=0 equation:


Simplifying
4cos2(x) + -9cos(x) + 5 = 0

Multiply cos2 * x
4cos2x + -9cos(x) + 5 = 0

Multiply cos * x
4cos2x + -9cosx + 5 = 0

Reorder the terms:
5 + -9cosx + 4cos2x = 0

Solving
5 + -9cosx + 4cos2x = 0

Solving for variable 'c'.

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

Add '-5' to each side of the equation.
5 + -9cosx + -5 + 4cos2x = 0 + -5

Reorder the terms:
5 + -5 + -9cosx + 4cos2x = 0 + -5

Combine like terms: 5 + -5 = 0
0 + -9cosx + 4cos2x = 0 + -5
-9cosx + 4cos2x = 0 + -5

Combine like terms: 0 + -5 = -5
-9cosx + 4cos2x = -5

Reorder the terms:
5 + -9cosx + 4cos2x = -5 + 5

Combine like terms: -5 + 5 = 0
5 + -9cosx + 4cos2x = 0

The solution to this equation could not be determined.

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