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Posted by **clf** on Tuesday, June 5, 2012 at 11:10am.

Cos^2x + cosx + 0

- calculus - info -
**Steve**, Tuesday, June 5, 2012 at 12:00pmno equation

If you mean cos^2x + cosx = 0 then we have

cosx(cosx+1)=0

cosx = 0 or -1

x = pi/2 or pi or 3pi/2

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