Предмет: Алгебра, автор: Аноним

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Автор ответа: Аноним

91) Учтём, что х² - а² = (х - а)( х + а) и после сокращения
= (х -а)/2х
92) Учтём, что с² - а² = (с - а)( с + а) и после сокращения
= 5с/(с - а)
93) Учтём. что а² - 4 = ( а- 2)( а+2) и после сокращения
= 2а/(а - 2)

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1. The French are famous for ………food.

· its

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