tính nhanh 1.2.3....9 - 1.2.3....8 - 1.2.3......8^2
1.2.3. . . 9-1.2.3. . .8-1.2.3. . .7.82
giup minh bai nay nha. Nhanh nhanh cang tot nha.
\(1.2.3.....9-1.2.3.....8-1.2.3...8.8\)
Giair nhanh mình tick!
Bài 1 Tính nhanh
1.2.3...9-1.2.3...8-1.2.3...7.8.8
1152-(374+1152)+(-65+374)
13-12+11+10-9+8-7-6+5-4+3+2-1
1.2.3...9-1.2.3...8-1.2.3...7.82
1.2.3...9-1.2.3...8-1.2.3...8^2
Giải thích giùm mình nha
1.2.3....9-1.2.3...8-1.2.3....7.8.8
b) 1.2.3...9-1.2.3...8-1.2.3...7.8^ 2
A = 1.2.3....9 - 1.2.3...8 - 1.2.3.....8.8
