№ 243 Алгебра = № 10.13 Математика
Заповніть у зошиті такі таблиці:
Розв'язок:
2 ⋅ 2 – 3 ⋅ 1 = 4 – 3 = 1
2 ⋅ 3 – 3 ⋅ 2 = 6 – 6 = 0
2 ⋅ (–1) – 3 ⋅ 0 = –2 – 0 = –2
2 ⋅ 0 – 3 ⋅ (–5) = 0 + 15 = 15
2 ⋅ (–2) – 3 ⋅ (–3) = –4 + 9 = 5
(–1) ⋅ (–1) + 2 = 1 + 2 = 3
(–1) ⋅ (–1) + 2 ⋅ (–1) = 1 – 2 = –1
0 ⋅ 0 + 2 = 0 + 2 = 2
0 ⋅ 0 + 2 ⋅ 0 = 0 + 0 = 0
1 ⋅ 1 + 2 = 1 + 2 = 3
1 ⋅ 1 + 2 ⋅ 1 = 1 + 2 = 3
2 ⋅ 2 + 2 = 4 + 2 = 6
2 ⋅ 2 + 2 ⋅ 2 = 4 + 4 = 8