Question

if m=3 and n=2 find the value of 3m²-2n³​

Answer 1

Step-by-step explanation:

In the given algebraic expression −2m

3

−3n

2

+5m

2

n, we substitute m=3 and n=2 as shown below:

−2m

3

−3n

2

+5m

2

n

=−2(3)

3

−3(2)

2

+5(3)

2

(2)

=−(2×27)−(3×4)+(5×9×2)

=−54−12+90

=−66+90

=24

Hence, −2m

3

−3n

2

+5m

2

n=24.