Question

evualet (3+y)(3-y)(9-y²) by using suitably identity ​

Answer 1

Step-by-step explanation:

(3+y)(3-y)(9-y²)

{(3)² - (y)²} (9-y²)

(9 - y²) (9 - y²)

(9 - y²)²

(9)² + (y²)² - 2×9×y²

(81 + y⁴ - 18y²)