Question

if m=3 and n=2 find 2mcube+ 3 n square - 5msquare n

Answer 1

according to BODMAS rule first addition is done and then substraction

Hope it helps..

Answer 2

given,
m = 3
n = 2
=2m^3+3n^2-5m^2n
=2 (3)^3+3 (2)^2-5 (3)^2×2
=(2×27)+(3×4)-(5×9×2)
=54+12-90
=66-90
=-24