Предмет: Алгебра, автор: vladim2003

Помогите пожалуйста номер 28!!!!!Зарание спасибо

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Автор ответа: 90misha90

0

Если $a neq 0$ , то:
$frac{5a^{3n}}{a^n}= frac{5a^{2n+n}}{a^n}= frac{5a^{2n}*a^n}{1*a^n}= frac{5a^{2n}}{1}=5a^{2n}$

$frac{48b^{2n-1}}{80b^{3n-1}}= frac{3*16b^{2n-1}}{5*16b^{2n-1+n}}= frac{3*16b^{2n-1}}{5*16b^{2n-1}*b^n}= frac{3}{5*b^n}= frac{3}{5b^n}$

$frac{17x^{n+1}}{51x^{n+4}}=frac{1*17x^{n+1}}{3*17x^{n+1+3}}= frac{1*17x^{n+1}}{3*17x^{n+1}*x^3}= frac{1}{3*x^3}= frac{1}{3x^3}$

Автор ответа: vladim2003

0

спасибо

Автор ответа: 90misha90

0

пожалуйста

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