1)(3m+2n)3 =27m3+72m2n+36mn2+8n3 2)(5x-3y)3=125x3-225x2y+135xy-27y3
№ Бекіту
№197
1)(2+х)3=23+3*22*х+3*2*х2+х3=8+12х+6х2+х3
3)(5-в)3=53-3*52*в2+3*52*в2-в3=125-75в2+15в2-в3
№199
1)(2m-3n)3=(2m)3-3*(2m)2*3n+3*2m*(3n)2-(3n)3=8m3-36m2n+54mn2-27n3 Помагите