3nmk•4n-0,3nm•2,6•nk+0.2n²m•(-4.5)k

Question

3nmk•4n-0,3nm•2,6•nk+0.2n²m•(-4.5)k

Answer 1

3nmk•4n-0,3nm•2,6•nk+0.2n²m•(-4.5)k=

12n^2mk-0,78n^2mk-0.9n²mk=

10,32n^2mk