Question

factorise y(y+2)+9(y+2)​

Answer 1

Answer:

Rewrite  

9

as  

3

2

.

y

2

−

3

2

Since both terms are perfect squares, factor using the difference of squares formula,  

a

2

−

b

2

=

(

a

+

b

)

(

a

−

b

)

where  

a

=

y

and  

b

=

3

.

(

y

+

3

)

(

y

−

3

)