Factors I - Normal

Question 1: Factorise using prime factors:

15 = ...

A

3 \times 4

B

1 \times 3 \times 3

C

1 \times 3 \times 5

D

3 \times 5

Question 2: Factorise using prime factors:

40 = ...

A

2 \times 2 \times 2 \times 5

B

1 \times 2 \times 5

C

1 \times 2 \times 2 \times 2 \times 5

D

2 \times 2 \times 5

Question 3: Factorise:

9 x^{2} - 16 = ...

A

(3 x - 1) (3 x + 4)

B

(3 x - 4) (3 x + 4)

C

(x - 4) (x + 4)

D

(3 x - 1) (3 x + 1)

Question 4: Factorise:

6 x^{2} + 2 x^{3} = ...

A

x^{2} (3 + x)

B

2 x^{2} (3 + x)

C

2 x (3 x + x^{2})

D

x^{2} (6 + 2 x)

Question 5: Factorise:

x^{2} - 5 x = ...

A

x (x - 5)

B

(x - 1) (x - 5)

C

x

D

{(x - 5)}^{2}

Test: Factors I - Normal