Question

Evaluate (3+y) (3-y) (9+y^2) using suitable identity​

Answer 1

Answer:

81-y^4

Step-by-step explanation:

(3+y) (3-y) (9+y^2)

=(3^2-y^2)(9+y^2)

=(9-y^2)(9+y^2)

=81-y^4

Answer 2

Answer:

Your Answer Is 18 - y⁴

Step-by-step explanation:

= (3+y) (3-y) (9+y²)

= (9 - y²) (9 + y²)

= 18 - y⁴