Question

From the sum of 2x² + 3xy-5 and 7+ 2xy-x² subtract 3xy + x² - 2​

Answer 1

Answer:

$Let λ will be added</p><p></p><p></p><p>∴x2+xy+y2+λ=2x2+3xy</p><p></p><p></p><p>⇒λ=x2+2xy−y2</p><p></p><p>$