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

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 - 4 -2m^2 - 10m
5 - m + m^2 - 4 - 2m^2 - 10m
и приводим подобные слагаемые
3m^2 - 11m + 1

Answer 2

(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