IntrotoRationalExpressions&–&Fractions&andExponents&Review ...
Intro
to
Rational
Expressions
?
Fractions
and
Exponents
Review
?
Worksheet
MCR3U
Jensen
1)
Add
or
subtract
the
following
fractions.
a)
2 + 3
b)
3 - 1
c)
x + y
d)
3x - 2 y
34
53
32
57
2)
Simplify
(multiplication)
a)
2 3
-
1 5
b)
4 5
25 12
c)
17 8
13 289
d)
-
5 8
75 128
3)
Simplify
(multiplication
and
division)
a)
d)
?
b) --!! --!
!!
e)
! c)
?
4)
Simplify
(exponents)
a)
(x6)(x4)
b)
(y3)(y7)(y9)
e)
h6 ? h8
x10
f )
x5
( ) ( ) i)
x2
3
y3
2
j)
(-x)2
(-x)
5)
Simplify
fractions
and
exponents
a)
c)
m5
?
m4
d)
h6
?
h8
( ) g)
yz 2
3
h)
-
(
x
)2
2
b)
6)
Simplify.
Your
answer
should
contain
only
positive
exponents.
a)
!!!! !
b)
! !! 2!
d)
2 ! 2!
e)
!! ! !!!!!!!! !! !! ! !!
g)
!!!!!!!!!
h)
!!!!!!!!!!!!!
j)
!!!! !!!!
!
c)
! ! 2!!
f)
!!!!!!!!!!!!
i)
! !!!
!
Answers
1.
a)
17
12
b)
4
c)
2x + 3y
15
6
d)
21x - 10 y
35
2.
a)
- 2
15
b)
5
c)
13
d )
- 25 3
3
8
64 2
3.
a)
(7/9)
b)
(77/20)
c)
(--34/45)
d)
(36/49)
e)
14
4.
a)
x10
b)
y19
c)
m
d)
e)
1/h
f
)
x5
g)
y3z6
h)
x4
i)
x6y6
5.
a)
!"!!"!
b)
!"!
!"!
!
6)
a)
!!!"
b)
!!!
c)
2!
d)
8
!
e)
8
!
!
f)
!!!
g)
!
!
!!!
h)
!!"
i)
!
j)
!!
!
!
!
!
j)
-x
3.3
Rational
Exponents
?
Worksheet
MCR3U
Jensen
1)
Evaluate
each
cube
root.
a)
! 64
!
b)
-1000 !
!
c)
!
!
2)
Evaluate
each
root.
!
a)
81!
b)
! !"
!
c)
64!
!"#
3)
Evaluate.
!
!
!
a)
8!
b)
32!
c)
-64 !
4)
Evaluate.
a)
16!!!
b)
25!!!
d)
- !
!!
!
e)
!" !!!
!!
!
!"
!"
!
d)
! !
!"
d)
! -100 000
!
d)
! !
!" !!!
c)
! !!!
!
f)
- !
!!
!
!"
5)
Simplify.
Express
your
answers
using
only
positive
exponents.
!!
!
!
a)
! !
b)
! !
!
d)
!!!!!
!!
e)
!
!!!!
6)
Simplify.
Express
your
answers
using
only
positive
exponents.
!
a)
!
?
!!!
b)
!!!!!
!!
d)
!!
!
!!!
e)
8
! !
27
!!!
!
c)
!!!
!!
! ! !!
f)
!!
! !!
c)
!
f)
5
7
!!
!
!!
7)
The
surface
area,
S,
of
a
sphere
can
be
expressed
in
terms
of
its
volume,
V,
using
the
formula
!
!
= 4 ! 3 !.
A
beach
ball
has
a
volume
of
24
000
cm3.
Find
its
surface
area,
to
the
nearest
hundred
square
centimeters.
Answers
2.1/2.2
Multiplying
and
Dividing
Rational
Expressions
?
Worksheet
MCR3U
Jensen
1)
State
the
restrictions
for
each
function.
a)
b)
c)
d)
2)
Simplify
each
expression
and
state
all
restrictions
on
.
a)
!
!!!!!"!!!!"
b)
!!!!!!!!!!!!!""
c)
!!!!!!!!!!"
3)
Simplify
and
state
the
restrictions
on
the
variables.
a)
!"! ? !"!!
!!! !!
b)
!"!!
!!
?
!!""!!!
c)
!!
!!
?
!"!!! !
d)
!"!"
!!
?
!!"!"!!!! !
4)
Simplify
and
state
the
restrictions
on
the
variable.
a)
!" ? !!!"
b)
!!! ? !!!
!!!" !
!!! !!!
................
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