Question

please answer mathematics questions​

Answer 1

Answer:

1. a²+2ab+b² = (a+b)²

2. (x²)²-2x²y²+(y²)² = (x²+y²)²

3. 48a²-243b² = 3(16a²-81b²)

                       = 3[(4a)²-(9b)²]

                       = 3(4a-9b)(4a+9b)

Step-by-step explanation: