Question

What should be subtacted from x2+xy+y2+x+2y-3 tp obtain x2-3y2+4xy-7?

Answer 1

Answer:

$4y {}^{2} - 3xy + x + 2y + 4$

Step-by-step explanation:

Just do this:

$(x { }^{2} + xy + y {}^{2} + 2y - 3) - (x {}^{2} - 3y {}^{2} + 4xy - 7)$