Question

ПОМОГИТЕ ПОЖАЛУЙСТА!!!!!!!

Answer 1

Объяснение:

$\frac{5 \times 8.2 - 12}{8.2 {}^{2} - 64 } - \frac{4 \times 8.2 - 20}{8.2 {}^{2} - 64 } = \frac{41 - 12}{( \frac{41}{5}) {}^{2} - 64 } - \frac{32.8 - 20}{ (\frac{41}{5}) {}^{2} - 64 } = \frac{752}{81} - \frac{320}{81} = 5$

2.

$- \frac{9 \times ( - 11 )- 15}{100 - ( 11) {}^{2} } + \frac{5 - 8 \times ( - 11)}{( 11) { }^{2} - 100 } = - \frac{ - 99 - 15}{100 - 121} + \frac{5 + 88}{121 - 100} = - \frac{ - 144}{ - 21} + \frac{93}{21} = - 1$