Question

помогите пж все эти примеры пжжжж​

Answer 1

Объяснение:

1).

$\frac{1}{ {3}^{5} } \times 243 + 0.25 \times 4.4 - 2.34 = \frac{1}{ {3}^{5} } \times {3}^{5} + \frac{1}{4} \times 4.4 - 2.34 = 1 + 1.1 - 2.34 = - 0.24$

3).

$\frac{( {2.5}^{2}) \times 8 - 42.8 }{( {5 \times 2})^{2} } + 6.45 = \frac{6.25 \times 8 - 42.8}{ {10}^{2} } + 6.45 = \frac{50 - 42.8}{100} + 6.45 = \frac{7.2}{100} + 6.45 = \frac{72}{1000} + 6.45 = 0.072 + 6.45 = 6.522$

5).

$\frac{ {24}^{2} - {13}^{2} }{33} + {3}^{2} = \frac{(24 + 13)(24 - 13)}{33} + 9 = \frac{37 \times 11}{33} + 9 = \frac{37}{3} + 9 = 12 \frac{1}{3} + 9 = 21 \frac{1}{3}$

7).

$\frac{ {24}^{3} + {12}^{3} }{ {21}^{2} - {15}^{2} } + {6}^{ - 1} = \frac{(24 + 12)( {24}^{2} - 24 \times 12 + {12}^{2}) }{(21 + 15)(21 - 15)} + \frac{1}{6} = \frac{36 \times 432}{36 \times 6} + \frac{1}{6} = 72 + \frac{1}{6} = 72 \frac{1}{6}$