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Mathematics

Answered

Find all x that satisfy the given equation for 0<_x<2pi. Select all that apply. 2 cos^2x+cos x=0

Answer :

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Answer:

x=0 or 2pi/3

Step-by-step explanation:

2 cos^2x+cos x=0

cos x(2cos x+1)=0

cos x=0 or 2cos x+1=0

x=0 or cosx=-1/2

x=0 or 2pi/3

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