7.5 Practice - Complex Fractions
7.5 Practice - Complex Fractions
Solve.
1+ 1
1)
x
1
-
1 x2
3)
a-2
4
a -a
11
5)
a2 - a
1 a2
+
1 a
7)
2
-
x
4 +
2
5
-
10 x+2
3 +2
9)
2a - 3
-6 2a - 3
-
4
x
1
11)
x+1 - x x +1
x+1 x
3
13)
x 9
x2
a2 - b2
15)
4a2b a+b
16ab2
17)
1
-
3 x
-
10 x2
1
+
11 x
+
18 x2
19)
1
-
2x 3x -
4
32
x - 3x - 4
21)
x
-
1
+
x
2 -
4
x
+
3
+
x
6 -
4
2)
1 y2
-
1
1+ 1
y
25
4)
a -a 5+a
1+1
6)
b2 4
b2 - 1
4 + 12
8)
2x - 3
5 + 15
2x - 3
10)
-5 b-5
-
3
10 + 6
b-5
2a
3
12)
a-1 - a
-6 a-1
-
4
x
14)
3x - 2 x
9x2 - 4
16)
1
-
1 x
-
6 x2
1
-
4 x
+
3 x2
18)
15 x2
-
2 x
-
1
4 x2
-
5 x
+
4
20)
1
-
12 3x + 10
8
x - 3x + 10
22)
x
-
5
-
18 x+2
x
+
7
+
x
6 +
2
1
23)
x
-
4
+
9 2x + 3
x
+
3
-
5 2x +
3
2
5
25)
b - b+3 3+ 3
b b+3
2
5
3
27)
b2 - ab - a2
2 b2
+
7 ab
+
3 a2
y
y
29)
y+2 - y-2 y+y
y+2 y-2
1
3
24)
a - a-2 2+ 5
a a-2
1
1
2
26)
y2 - xy - x2
1 y2
-
3 xy
+
2 x2
x-1 x+1
28)
x+1 - x-1 x-1 + x+1
x+1 x-1
x+1 1-x
30)
x-1 - 1+x
1 (x + 1)2
+
1 (x - 1)2
Simplify each of the following fractional expressions.
31)
x-2 - y-2 x-1 + y-1
x-2y + xy-2 32) x-2 - y-2
33)
x-3y - xy-3 x-2 - y-2
35)
x-2 - 6x-1 + 9 x2 - 9
34)
4 - 4x-1 + x-2 4 - x-2
x-3 + y-3 36) x-2 - x-1y-1 + y-2
Beginning and Intermediate Algebra by Tyler Wallace is licensed under a Creative Commons Attribution 3.0 Unported License. ()
2
7.5
1)
x x-1
2)
1-y y
3)
-a a+2
4)
5-a a
5)
a-1
- a+1
6)
b3 + 2b - b - 2 8b
7)
2 5
8)
4 5
9)
1
-2
10)
1
-2
11)
x2 - x - 1 x2 + x + 1
12)
2a2 - 3a + 3 - 4a2 - 2a
13)
x 3
Answers - Complex Fractions
14) 3x + 2
15)
4b(a - b) a
16)
x+2 x-1
17)
x-5 x+9
18)
(x - 3)(x + 5)
- 4x2 - 5x + 4
19)
1 3x + 8
20)
1 x+4
21)
x-2 x+2
22)
x-7 x+5
23)
x-3 x+4
24)
- 2a - 2 3a - 4
25)
b-2
- 2b + 3
26)
x+y x-y
27)
a - 3b a + 3b
28)
2x
- x2 + 1
29)
2
-y
30) x2 - 1
31)
y-x xy
32)
x2 - xy + y2 y-x
33)
x2 + y2 xy
34)
2x - 1 2x + 1
35)
(1 - 3x)2 x2(x + 3)(x - 3)
36)
x+y xy
Beginning and Intermediate Algebra by Tyler Wallace is licensed under a Creative Commons Attribution 3.0 Unported License. ()
3
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