Question

Algebraic expression
i) 9m²-2mn+n²
ii) m²-n²
jii) m²-3mn-2n²
Let's add
(i) +(ii) +(iii)
Let's subtract
(i) -(ii)
(ii) -(iii) ​

Answer 1

it's so hard bro it's I guess jee or university question