Знайдіть значення виразу:[tex] \frac{21 {}^{5} \times 3 {}^{ - 7} }{63 {}^{ - 2} \times 7 {}^{8} } [/tex]. Created by olya170305. algebra-ru

tex]...

olya170305 @olya170305

November 2021 1 11 Report

Знайдіть значення виразу:
[tex] \frac{21 {}^{5} \times 3 {}^{ - 7} }{63 {}^{ - 2} \times 7 {}^{8} } [/tex]

Answers & Comments

Universalka

Verified answer

$\frac{21^{5}*3^{-7} }{63^{-2}*7^{8}}=\frac{(3*7)^{5}*3^{-7} }{(3^{2}*7) ^{-2}*7^{8}}=\frac{3^{5}*7^{5}*3^{-7}}{3^{-4}*7^{-2}*7^{8}}=3^{5-7-(-4)} *7^{5-(-2)-8}=\\\\=3^{5-7+4}*7^{5+2-8} =3^{2}*7^{-1}=9*\frac{1}{7}=\frac{9}{7}=\boxed{1\frac{2}{7}}$

0 votes Thanks 0

nominalnij strum ampermetra 5a klas tochnosti 15 viznachiti absolyutnu pohibku pr

Answer

olya170305 August 2022 | 0 Ответы

862e936187b1eec9c9e8834133066e96

Answer

Answers & Comments

Verified answer

2 3b 2a

tex 648e1fc6a6f93

nuzhno polnoe reshenie pozhalujstae5e23599db26cc199ab818d0c2f09503 48212

79cf93e5f59cac0684cb7b3ed6ff08b1

tex kak reshat2db2c45a7fb815287d28a0cc0395c345 76602

tex5d9c85281c3e315de87407566921093c 67404

tex0224852d16e651ed4c2d5796a6d28601 43523

7b39af3d2e2814ef1617e7e1dcf1102e

nominalnij strum ampermetra 5a klas tochnosti 15 viznachiti absolyutnu pohibku pr

862e936187b1eec9c9e8834133066e96

рекомендуемые вопросы

Helpful Links

Helpful Social