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Solve on the interval [0,2%): 2 cos²x+3cosx+1=0

Solve on the interval [0,2%): 2 cos²x+3cosx+1=0
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Solve on the interval [0,2%):
2 cos²x+3cosx+1=0

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User Rellampec
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Answer:

Explanation:

Solve on the interval [0,2%): 2 cos²x+3cosx+1=0-example-1
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User Taruxtin
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