Question

упростите выражение:1) 4a(a-2)-(a-4)^22) 2(m+1)^2-4m

Answer 1

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

Answer 2

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