Question

Пожалуйста срочно очень помогите ​

Answer 1

$frac{9 {}^{ - 13} times 9 {}^{19} }{9 {}^{5} } = frac{9 {}^{ - 13 + 19} }{9 {}^{5} } = frac{9 {}^{6} }{9 {}^{5} } = 9$

$27 frac{2}{3} - 1.71 {}^{0} = 9 times 2 - 1 = 18 - 1 = 17$

$frac{3 {}^{17} times 6 {}^{16} }{18 {}^{15} } = frac{3 {}^{17} times 6 {}^{16} }{6 {}^{15} times 3 {}^{15} } = frac{3 {}^{17} }{3 {}^{15} } times 6 = 3 {}^{17 - 15} times 6 = 3 {}^{2} times 6 = 9 times 6 = 54$