5cos^2x+12cosx+7=0

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Solution for 5cos^2x+12cosx+7=0 equation: 


Simplifying
5cos2x + 12cosx + 7 = 0

Reorder the terms:
7 + 12cosx + 5cos2x = 0

Solving
7 + 12cosx + 5cos2x = 0

Solving for variable 'c'.

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

Add '-7' to each side of the equation.
7 + 12cosx + -7 + 5cos2x = 0 + -7

Reorder the terms:
7 + -7 + 12cosx + 5cos2x = 0 + -7

Combine like terms: 7 + -7 = 0
0 + 12cosx + 5cos2x = 0 + -7
12cosx + 5cos2x = 0 + -7

Combine like terms: 0 + -7 = -7
12cosx + 5cos2x = -7

Reorder the terms:
7 + 12cosx + 5cos2x = -7 + 7

Combine like terms: -7 + 7 = 0
7 + 12cosx + 5cos2x = 0

The solution to this equation could not be determined.

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