If m = 3 and n = 2 find the value of

2m³ + 3n² – 5m²n

9

If m = 3 and n = 2 find the value of

9m² – 10n³

9

If m = 3 and n = 2 find the value of

2m² n²

9

If m = 3 and n = 2 find the value of

mⁿ – n^m

10

Simplify and give reasons