Question

please answer me fast expand the following ​

Answer 1

Answer:

$3xy$

hope it can help you like me

Answer 2

1 + 4x^2 + 3y^2 + 2(1)(2x) + 2(2x)(-3y) + 2(-3y)(1)

= 1- 4x^2 + 3y^2 + 4x - 12xy - 6y