Предмет: Математика, автор: guchua01

Срочно! Помогите пожалуйста(((

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Автор ответа: sangers1959

1

Ответ:

Пошаговое объяснение:

(7!+8!)/(5!+6!)=7!*(1+8)/(5!*(1+6)=7!*9/(5!*7)=5!*6*7*9/(5!*7)=6*9=54.

8!/6!=6!*7*8/6!=7*8=56.

A₁₇²=17!/(17-2)!=17!/15!=15!*16*17/15!=16*17=272.

C₈³=8!/((8-3)!*3!)=5!*6*7*8/(5!*1*2*3)=6*7*8/6=7*8=56.

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