find the product of the following

1. ( a + 9) ( a+9)
2. ( 6x + 2y ) (6x+2y)
3. (0.8p + q) ( 0.8p+q)
4. (2/3p + 3/5q) ( 2/3p + 3/5q)
5. (y² + 3) (y²+3)
6. (7/9b² + 2) (7/9b²+2)​