Answer:
(a)
(b)
(c)
(d)

Explanation:
For each expression, we need to factor out the GCF(Greatest common factor)
a)

Here, the GCF is
. So, we will get.....

b)

Here, the GCF is
. So, we will get......

c)

Here, the GCF is
. So, we will get.......

d)

Here, the GCF is
. So, we will get.......
