№ 22 Алгебра = № 22 Математика
Знайдіть значення виразу:
1) (–3)4;
2) (–6)3;
3) 0,1 ⋅ 103;
4) (2,6 – 2,7)2.
Розв'язок:
1) (–3)4 = 34 = 3 ⋅ 3 ⋅ 3 ⋅ 3 = 81;
2) (–6)3 = –63 = –(6 ⋅ 6 ⋅ 6) = –216;
3) 0,1 ⋅ 103 = 10–1 ⋅ 103 = 102 = 100;
4) (2,6 – 2,7)2 = (–0,1)2 = $\left(-\frac{1}{10}\right)^2=\frac{1}{100}$=0,01.