Step-by-step explanation:
[tex] \sf \: \dfrac{m}{4} (6m - 8) + \dfrac{m}{2} (10m - 2)[/tex]
[tex] \tiny {\sf \dfrac{m}{4} \times 6m - \dfrac{m}{4 } \times 8 + \dfrac{m}{2} \times 10m - \dfrac{m}{2} \times 2}[/tex]
[tex] \sf \: \dfrac{3 {m}^{2} }{2} - 2m + 5 {m}^{2} - m[/tex]
[tex] \sf \: \dfrac{3 {m}^{2} + 10 {m}^{2} }{2} - 2m - m[/tex]
[tex] \sf \: \dfrac{13 {m}^{2} }{2} - 3m[/tex]
This is the required answer
