Question

Q - 2 Multiply the following using appropriate identities.

3. ( x + 7 ) ( x + 7 ) (2)

4. ( 3x + 1 ) ( 3x – 8 ) ​

Answer 1

Step-by-step explanation:

4). (3x + 1) (3x - 8)

3x² + (1 - 8)3x + 1×-8

9x² + 3x - 24x - 8

9x² - 21x - 8

3). (x + 7) (x - 7)

(x)² - (7)²

x² - 49.