Задача 25763 ...

u21711893134

02.04.2018

Упростить выражение 2×(3m-2)×(1-m)-3×(1-2m)²

SOVA

02.04.2018

2*(3m–2)*(1–m)–3*(1–2m)²=
=2*(3m-2-3m^2+2m)-3*(1-4m+4m^2)=
=2*(-3m^2+5m-2)-3*(1-4m+4m^2)=
=-6m^2+10m-4-3+12m-12m^2=
=-18m^2+22m-7