Question

if m =3 and n =2 find the value of i) mn-nm. 9 ii) 9m²-10m³
(in 1 one in mn is n is power and in nm m is power
don't spam write correct answer I'll mark as brainest​

Answer 1

mn-nm

3×2-2×3

6-6=0.

9m²-10m³

9×(3)²-10×(3)³

9×6-10×27

54-270

-216.

Answer 2

Answer:

i. -6

ii. 189

Step-by-step explanation:

i) soln

=

${(mn)}^{n} - (nm)^{m} \\ (3 \times 2)^{2} - (2 \times 3)^{3} \\ {6}^{2} - {6}^{3} \\ 12 - 18 \\ - 6$

ii) soln

=

$9m^{2} - 10m^{3} \\ 9 \times 3 {}^{2} - 10 \times {3}^{3} \\ 9 \times 9 - 10 \times 27 \\ 81 - 270 \\ 189$