Знайди значення виразу:
1) (–2,1)2;
2) (–4)3;
3) (-$\frac{3}{7}$)2;
4) (–0,1)3;
5) (–1)2;
6) (–1)3.
Розв'язок:
1) (-2,1)² = -2,1 ⋅ (-2,1) = 4,41
2) (-4)³ = -4 ⋅ (-4) ⋅ (-4) = -64
3) (-$\frac{3}{7}$)2=-$\frac{3}{7}$ ⋅ (-$\frac{3}{7}$) = $\frac{9}{49}$
4) (-0,1)³ = -0,1 ⋅ (-0,1) ⋅ (-0,1) = -0,001
5) (-1)² = -1 ⋅ (-1) = 1
6) (-1)³ = -1 ⋅ (-1) ⋅ (-1) = -1