Question

n
2
+
3
m
n
5
m
⋅
35
m
3
m
+
n
n2+3mn5m⋅35m3m+n при
m
=
3
;
n
=
1
,
6

Answer 1

Упростим выражение:
$frac{n^2+3mn}{5m} * frac{35m}{3m+n} = frac{n(n+3m)* (7*5m)}{5m(n+3m)} = frac{n*1*7*1}{1*1} = frac{7n}{1} = 7n$

при m = 3 ;  n = 1,6   ⇒    7  * 1,6  = 11,2