1. Which of the following are irrational numbers?

g)

o)

2. For what values of is the given expression notdefined?

a) c)

b) d)

3. For what values of is the given expression notdefined?

e) g)

4. For what values of is the given expression notdefined?

f) h)

3. Simplify the following expressions.

a) f)

c) h)

d) i)

e) j)

4. Sketch on the number line the graphs of the following subsets of R.

a)

b)

c)

Sketch on the number line the graphs of the following subsets of R.

d)

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