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MATH GRADE 9 CHAPTER 2 TEST

Total questions: 15

Worksheet time: 20mins

Name
Class
Date
1.

x2 + 2 − 1 + 6x2 − 4x2

a)
x 2  -1
b)
x2 +1
c)
3x2 +1
d)
x 2+3
2.
Simplify    5(2 - 7n)
a)
 52 - 57n
b)
10 - 7n
c)
10 - 35n
d)
10 + 35n
3.
a)
x4
b)
4x3
c)
3x3
d)
4x2
4.
a)
y4
b)
y5
c)
y6
d)
6y
5.

Translate this phrase into an Algebraic expression.

57 more than 3 times Ziana's score

Use the variable g to represent Ziana's score.

a)

57g + 3

b)

3g - 57

c)

3g + 57

d)

57 - 3g

6.

Factor:

5x2 + 20x

a)

5 (x + 4)

b)

5x (x + 4)

c)

5 (x2 + 4)

d)

5x2 (x + 4)

7.

Factorise 8x+32

a)

8(x+4)

b)

4(2x+16)

c)

2(4x+16)

d)

4(2x+8)

8.

7a+3b=\frac{7}{a}+\frac{3}{b}=  

a)

10ab\frac{10}{ab}  

b)

7b+3aab\frac{7b+3a}{ab}  

c)

21ab\frac{21}{ab}  

d)

7b+3bab\frac{7b+3b}{ab}  

9.

3a12a=\frac{3}{a}-\frac{1}{2a}=  (In its simplest form)

a)

52a\frac{5}{2a}  

b)

22a\frac{2}{2a}  

c)

42a\frac{4}{2a}  

d)

72a\frac{7}{2a}  

10.

Make x the subject of the formula:

a)

x = y3+ax\ =\ \frac{y}{3}+a

b)

x = y+a3x\ =\ \frac{y+a}{3}

c)

x = y3ax\ =\ \frac{y-3}{a}

d)

x = ya3x\ =\ \frac{y}{a}-3

11.

Make x the subject of the formula:

a)

x = ay3x\ =\ ay-3

b)

x = a(y3)x\ =\ a\left(y-3\right)

c)

x = 3yax\ =\ 3y-a

d)

x = a- 3y

12.

Evaluate:

(y+z)2\left(y+z\right)^2  

when y = -4 and z = -3

a)

1

b)

-1

c)

49

d)

-49

13.

Evaluate

a+b36a+b^3-6  

when a = 5 and b = 3

a)

26

b)

8

c)

2

d)

12

14.

f(x) = -4x - 12

What is f-1(x)?

a)

f-1(x) = 4x - 3

b)

f-1(x) = -1/4x - 3

c)

f-1(x) = 1/4x + 3

d)

f-1(x) = -4x - 3

15.

Which is f -1(x)?

a)

f -1(x) = 5x + 3

b)

f -1(x) = 5x - 3

c)

f -1(x) = 5x - 15

d)

f -1(x) = 1/5(x) + 3/5