Question

(6/m+3)-1(6m²-15m-9/2m²-18)

Answer 1

(6/m+3)-1(6m²-15m-9/2m²-18)
6/m+3-1(3/2m²-15m-18)
6/m+3-3/2m²+15m+18
6/m+21-3/2m²+15
$\frac{12+42m-3m^{3}+30m^{2}}{2m}$