Предмет: Алгебра, автор: nice1341

помогите 3,4 номер пожалуйста

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Автор ответа: nataliavan

3
7x-2*(-3,5x+1,5)=7x+7-3=7x+3
7x-2*(-3,5-1,5)=7x+7+3=7x+10
7x-2*(3,5+1,5)=7x-7-3=7x-4
7x-2*(3,5-1,5)=7x-7+3=7x-4
4
x^5*x^22/x^11=x^5*(x^11)^2/x^11=x^5*x^2=x^7

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