Question

Simplify:
(1)
m² - 12 m² + mn+n
?
(m+n)
m?
3 n
X-
3​

Answer 1

Answer:

Solution

verified

(m+n)

2

m

2

−n

2

×

m

3

−n

3

m

2

+mn+n

2

=

(m+n)

2

(m−n)(m+n)

×

(m−n)(m

2

+mn+n

2

)

m

2

+mn+n

2

=

(m+n)

1