Question

(c) (i) 9m² - 2mn +n2
(ii) m+n?
(iii) m²-3mn - 2n
$+$
​

Answer 1

Answer:

In the given algebraic expression m

n

−n

m

, we substitute m=3 and n=2 as shown below:

m

n

−n

m

(3)

2

−(2)

3

=9−8

=1

Hence, m

n

−n

m

=1.

Answer 2

Answer:

9m²_2mn+n²

(3)²_2mn+n²