# NCERT Class 12-Mathematics: Exemplar Chapter – 4 Determinants Part 6 (For CBSE, ICSE, IAS, NET, NRA 2022)

Doorsteptutor material for CBSE/Class-12 is prepared by world's top subject experts: get questions, notes, tests, video lectures and more- for all subjects of CBSE/Class-12.

**Question 6**:

**Answer**:

We have,

Expanding along

Using the properties of determinants in Exercises 7 to 9, prove that:

**Question 7**:

**Answer**:

We have to prove,

Hence proved.

**Question 8**:

**Answer**:

We have to prove,

Hence proved.