How to find the positive and negative intervals for f(x)=x+2 My worksheet states that f(x) is positive when (-2,infinity) and negative when (-infinity, -2). What does this mean and how is this shown in a graph.

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step-by-step explanation:

sin(7pi/6 - pi/3)  

= sin(7pi/6 - 2pi/6)  

= sin(5pi/6)  

= sin(pi - pi/6)  

= sin(pi/6)  

= 1/2  

sin 7pi/6 - sin pi/3  

= sin (pi + pi/6) - sin pi/3  

= -sin pi/6 - sin pi/3  

= -1/2 - sqrt(3)/2  

= -(1+sqrt(3))2

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the answer is: -22 also a

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-lavira: )