Предмет: Алгебра, автор: Geografan

даю 30 баллов!

найдите значения выражения:
1) $(1\frac{9}{20} +\frac{3}{4} )5$
2) $8-^{15} \\8-^{10} 8^{-6}$

Ответы

Автор ответа: Аноним

1

Объяснение:

1. (1 9/20+3/4)*5=5 45/20+15/4=5 9/4+15/4=5 24/4=5+6=11

2. 8⁻⁸*8⁻⁶=8⁻⁸⁺⁶=8⁻²=1/8²=1/64

при делении степеней с одинаковыми основаниями вычитаем показатели из минус восьми вычли минус шесть. и заменили на степень с положит. показателем. см. решение.

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