Question

помогите решить все эти примеры 32.10 Задание: Упростите выражения

Answer 1

2)m^2+64+16m-m^2-2mn+2mn+4n^2=64+16m+4n^2
4)n^2+225+30n-n^2+19n=225+49n
6)30m+36-25m^2-30m+25m^2+16-40m=52-40m

Answer 2

а) (m+8)^2-(m-2n)(m+2n)= m^2+16m+64-(m^2+2nm-2nm-4n^2)=m^2+16m+64-m^2-2nm+2nm+4n^2= 16m+64+2n^2

б) (n+15)^2-n(n-19)= n^2+30+225-n^2+19n=49n+225

в) (6-5m)(5m+6)+(5m-4)^2= 30m+36-25m^2-30m+25m^2-40m+16= 52-40m