Пошаговое объяснение:
номер 2.
52 × 48 + 36 × 48 + 11 × 48 = (52+36+11) × 48 = 99 × 48 = 4752
16 × 32 - 20 × 16 + 38 × 16 = (32-20+38) × 16 = 50 × 16 = 800
номер 3.
а) 12 × 17 + 17 × 23 + 35 × 13 = (12 + 23) × 17 + (35 × 13) = 35 × 17 + 35 × 13 = (17 + 13) × 35 = 30 × 35 = 1050
б) 41 × 80 - 25 × 41 + 55 × 29 = (80 - 25) × 41 + (55 × 29) = 55 × 41 + 55 × 29 = (41 + 29) × 55 = 70 × 55 = 3850
Пошаговое объяснение:
номер 2.
52 × 48 + 36 × 48 + 11 × 48 = (52+36+11) × 48 = 99 × 48 = 4752
16 × 32 - 20 × 16 + 38 × 16 = (32-20+38) × 16 = 50 × 16 = 800
номер 3.
а) 12 × 17 + 17 × 23 + 35 × 13 = (12 + 23) × 17 + (35 × 13) = 35 × 17 + 35 × 13 = (17 + 13) × 35 = 30 × 35 = 1050
б) 41 × 80 - 25 × 41 + 55 × 29 = (80 - 25) × 41 + (55 × 29) = 55 × 41 + 55 × 29 = (41 + 29) × 55 = 70 × 55 = 3850