Question

1) (y²-4) (y²-9)
2) (3a²-4b²) ( 3a²+5b²)

Solve both using identity : x²+x(a+b)(aXb)​

Answer 1

Answer:

1) y²-468y

2) 3a²-60ab²

Step-by-step explanation:

1) using the identity

y²+ y (-4-9 ) (4×9)

y²+(-4y-9y)(36)

y²-13y×36

(y²-468y)

2) 3a²+3a(-4b+5b)(-4b×5b)

3a²+3ab×-20b

(3a²-60ab²)