Question

(5-m)+(m-2)(m+2)-2m(m+5)

Answer 1

(5-m)+(m-2)(m+2)-2m(m+5)
5-m+m^2+2m-2m-4-2m^2+10m
5-4-m+2m-2m+10+m^2-2m^2
1-9-m^2