potrzebne jutro
1 Zapisz w postaci jednej potęgi
[tex]a) \: \: \: \: {5}^{7} \times {2}^{7} [/tex]
[tex]b) \: \: \: {6}^{8} \div {3}^{8} [/tex]
[tex]c) \: \: \: {0.4}^{6} \times {15}^{6} [/tex]
[tex]d) \: \: \: { (\frac{3}{5} )}^{5} \div {3}^{5} [/tex]
[tex]e) \: \: \: ({ - 2.7})^{8} \div {( - \frac {9}{10} )}^{8} [/tex]
2 Zapisz w postaci jednej potęgi i oblicz
[tex]a) \: \: \: {2}^{3} \times {15}^{3} [/tex]
[tex]b) \: \: \: {21}^{4} \div {7}^{4} [/tex]
[tex]c) \: \: \: {0.125}^{191} \times {8}^{191} [/tex]
[tex]d) \: \: \: {1.69}^{2} \div {1.3}^{2} [/tex]









Odpowiedź :

Odpowiedź:

zad 1

a)  5⁷ * 2⁷ = (5 * 2)⁷ = 10⁷

b)  6⁸ : 3⁸ = (6/3)⁸ = 2⁸

c)  0,4⁶ * 15⁶ = (0,4 * 15)⁶ = 6⁶

d)  (3/5)⁵ : 3⁵ = (3/5 : 3)⁵ = (3/5 * 1/3)⁵ = (3/15)⁵ = (1/5)⁵ = 0,2⁵

e) (- 2,7)⁸ : (- 9/10)⁸  = (27/10 * 10/9)⁸ = 3⁸

zad 2

a) 2³ * 15³ = (2 * 15)³ = 30³ = 27000

b)  21⁴ : 7⁴ = (21/7)⁴ = 3⁴ = 81

c) 0,125¹⁹¹ * 8¹⁹¹ = (0,125 * 8)¹⁹¹ = 1¹⁹¹ = 1

d) 1,69² : 1,3² = (1,69 : 1,3)² = 1,3² = 1,69