Answer:
9m(n)^3 +14m(n)^2
Step-by-step explanation:
6m(n)^3 - m(n)^2 + 3m(n)^3 + 15m(n)^2
=> 6m(n)^3 + 3m(n)^3 + 15m(n)^2 - m(n)^2
=> 9m(n)^3 +14m(n)^2
Answer:
Perimeter = 30
Step-by-step explanation:
hypotenuse = 
hypotenuse = 
hypotenuse = 
hypotenuse = 13
Perimeter = 5+12+13
Perimeter = 30