Question

what should be added to m square 2 + mn +y Square to get 2m square +5mn​

Answer 1

Answer:

m² + 4mn - y

Step-by-step explanation:

2m²+5mn - (m² + mn + y) = 2m² + 5mn - m² - mn - y

= m² + 4mn - y

Hope it helps you:)

Answer 2

Answer:

$m^{2}$+3mn-$y^{2}$

Reason:-

Change signs and subtract.