Prove the following identities:

Applying, R₃→R₃ – R₂

Applying, R₂→R₂ – R₁

= [(2a + 4)(1) – (1)(2a + 6)]

= – 2

= R.H.S

Hence, proved.

19

Prove the following identities:

=

20

Prove the following identities:

22

Prove the following identities:

23

Prove the following identities: