Question

5)
The completely factored form of
2dº +6d-18d - 54d is

Answer 1

=

2

d

4

−

18

d

2

+

6

d

3

−

54

d

=

2

d

2

(

d

2

−

9

)

+

6

d

(

d

2

−

9

)

=

(

2

d

2

+

6

d

)

(

d

2

−

9

)

=

(

2

d

2

+

6

d

)

(

d

+

3

)

(

d

−

3

)

=

2

d

(

d

+

3

)

(

d

+

3

)

(

d

−

3

)

=

2

d

(

d

+

3

)

2

(

d

−

3

)

Explanation: