Question

iv. (9m²-n+15) (m²-3)​

Answer 1

Step-by-step explanation:

m^2 -3=0

m^2 =3

so, put the value of m^2

9m^2-n+15=0

9 (3)-n+15=0

27-n+15=0

42-n=0

-n=-42

n=42 answer