Question

упростите выражение:
1)     4a(a-2)-(a-4)^2
2)    2(m+1)^2-4m
 

Answer 1

4a^2- 8a- a^2+ 8a-16= 3a^2-16
2( m^2+2m+1)- 4m= 2m^2+4m+2-4m= 2m^2+2

Answer 2

1) 4a2-8a-a2+8a-16=3a^2-16
2) 2(m2+2m+1)-4m=2(m2+1)