Transcript review test

Review Test
Rational Expressions
and Equations
Review Test
1. What
value of x is not possible in
𝒙
the domain of the expression
?
𝟑𝒙+𝟗
a. -3
b. 3
c. 9
d. –9
Review Test
2. Simplify:
a. x + 5
b. x – 5
c. x + 3
d. x - 3
𝑥 2 +8𝑥+15
𝑥+5
Review Test
3. Multiply:
a. 4
b. 2
c. 1
d. 2x
2𝑥
5𝑦
●
40𝑦
8𝑥
Review Test
4. Divide: 2x ÷
a. 8x
b. 1/8
c. 8
d. -8
𝟔𝒙
𝟐𝟒
Review Test
5. Add:
a. y
b. 2
c. 1
d. -1
𝒚 −𝟐𝟏
𝒚
+
𝟐𝟏
𝒚
Review Test
6. If
𝟏
𝟑𝒙
=
𝟏
,
𝟐𝒙+𝟓
a. -2
b. 2
c. 5
d. -5
what is the value of x?
Review Test
7. What is the simplified form of
𝑥 2 −3𝑥 −18
?
2
𝑥 +10𝑥+21
a.
𝒙−𝟔
𝒙+𝟕
b.
𝒙+𝟕
𝒙−𝟑
c.
𝒙+𝟑
𝒙+𝟕
d.
𝒙+𝟕
𝒙 −𝟑
Review Test
8. What is the lowest term of
10a2b
25ab2
2𝑎
5𝑎
3𝑎
5𝑏
a. 5𝑏
b. 2𝑏
c. 5𝑏
d. 2𝑎
Review Test
9. What is the simplest form of
the product of
8
1+𝑥
●
1 −𝑥 2
8
a. 1- x b.
1
1−𝑥
?
c. x – 1
d.
1
𝑥 −1
Review Test
10. Simplify the expression
3m ÷ (
a.
𝟑𝒙𝒚
𝒙+𝒚
𝒎
𝒙
b.
+
𝒎
𝒚
)
𝟑𝒎𝒙𝒚
𝒎𝒚+𝒎𝒙
c.
𝟑
𝒎𝒚+𝒎𝒙
Problem Solving Involving
Rational Expressions
Joseph and Angel are assigned
to clean their house. Joseph can
clean the house in about 2 hours.
Angel can clean the same house
in 3 hours. How long would it take
them to clean the house if they
work together?