**Find the value of k, if is a factor of in each of the following cases:**

**(i)** **(ii)**

** (iii) ** **(iv) **

**Solution (i)**

Zero of is 1.

It is given that is a factor of .

Therefore, by Factor theorem, .

**Solution (ii)**

Zero of is 1.

It is given that is a factor of .

Therefore, by Factor theorem, .

**Solution (iii)**

Zero of is 1.

It is given that is a factor of .

Therefore, by Factor theorem, .

**Solution (iv)**

Zero of is 1.

It is given that is a factor of .

Therefore, by Factor theorem, .