Question

The question is on then sheet ​

Answer 1

$= (11 {m}^{2} {n}^{2} + 2mn - 11) - (5 {m}^{2} {n}^{2} - 6mn + 17)$

$= 11 {m}^{2} {n}^{2} + 2mn - 11 - 5 {m}^{2} {n}^{2} + 6mn - 17$

$= (11 {m}^{2} {n}^{2} - 5 {{m}^{2} } {n}^{2} ) + (2mn + 6mn) + ( - 11 - 17)$

$= 6 {m}^{2} {n}^{2} + 8mn - 28$

The other person is wrong

I can say that for sure.

Answer 2

Answer:

6$m^{2}$$n^{2}$-4mn+6

Step-by-step explanation:

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