Question

- the sum of two expression is x2 - y2 - 2xy + y - 7 . if one them is 2square 2 + 3y2 - 7 y + 1 , find the other ? ​

Answer 1

Answer:

$- {x}^{2} - 4 {y}^{2} - 2xy + 8y - 8 \: \: \: \: \: \: \: \: is \: the \: final \: answer$