Question

I need to simplify for the question

Answer 1

`\tt x^2+3xy+4y^2`

Explanation:

`\tt(x-2y)^2+7xy\\\\=x^2-4xy+4y^2+7xy\\\\=x^2+3xy+4y^2`

Answer 2

`x^2 + 3xy + 4y^2`

Explanation:

`(x - 2y)^2 + 7xy =`

`= (x - 2y)(x - 2y) + 7xy`

`= x^2 -2xy - 2xy + 4y^2 + 7xy`

`= x^2 + 3xy + 4y^2`