Math 012 Homework on Rational Expressions (due Monday, February 10th)
1) Find the domain of the expressions below
x2
1
b)
30 x  15
x 1
c)
x8
a)
2) Simplify each expression. Assume variables are restricted to values that prevent division by zero.
a)
2  3x 8  2 x 4 x  6


2 x  3 3x  6 3x  6
4  2
b) 1    1  
x 
x
2
2
2  
2 

c)  1 
  1 
 3x   3x 
d)
vw
1
v
e)
f)

1
w
a 2  b 2
a 1  b 1
1
1

xh x
h
1
x
x
g)
1
1 2
x
2