Question

Plz help me get the right answer to these

Answer 1

Explanation:

`(9m^3+4n)+7m^3\qquad\text{combine like terms}\\\\=(9m^3+7m^3)+4n\\\\=16m^3+4n`

Answer 2

16m³ + 4n

remove the bracket and collect like terms

9m³ + 4n +7m³

= (9m³ + 7m³ ) + 4n = 16m³ + 4n