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

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**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.