Question

Calculati:Dau coroana urgent ​

Answer 1

Răspuns:

$a) \frac{98 \times ( - 40)}{ - 14 \times (20 - 4 \times 10)} = \frac{ - 3920}{ - 14 \times (20 - 40)} = \frac{ - 3920}{ - 14 \times ( - 20)} = \frac{ - 3920}{280} = \frac{ - 392}{28} = - 14$

$b) \frac{ {2}^{3} \times {3}^{3} \times ( - 25) \times 6 }{( - {6}^{2}) ^{2} \times (100 - 5 \times 15) } = \frac{8 \times 27\times ( -25) \times 6 }{( - {6})^{4} \times (100 - 75)} = \frac{8 \times 27 \times ( - 25) \times 6}{ {6}^{4} \times 25 } = \frac{8 \times 27 \times ( - 1) \times 1}{ {6}^{3} \times 1 } = \frac{216 \times ( - 1)}{216 } = \frac{ - 216 }{216} = - 1$