Question

Срочно очень срочно прошу помогите ​

Answer 1

1) Сначала упростим

$\frac{ {a}^{20} \times {a}^{20} }{ {a}^{17} \times {a}^{19}} = \frac{ {a}^{40} }{ {a}^{36} } = {a}^{4}$

${a}^{4} = {5}^{4} = 625 \\ {a}^{4} = { ( - \frac{3}{11}) }^{4} = \frac{81}{14641} \\ {a}^{4} = {2.8}^{4} = 61.4656 \\ {a}^{4} = {( - 40)}^{4} = 2560000$

2) Точно также

$\frac{ {b}^{40} \times {b}^{10} \times {b}^{38} }{ {b}^{37} \times {b}^{49} } = \frac{ {b}^{88} }{ {b}^{86} } = {b}^{2}$

${b}^{2} = {8}^{2} = 64 \\ {b}^{2} = {( - 1.3)}^{2} = 1.69 \\ {b}^{2} = { (\frac{5}{3}) }^{2} = \frac{25}{9} = 2 \frac{7}{9} \\ {b}^{2} = {( - 6)}^{2} = 36$