giải hộ mik nhoa …………………………………………………………

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giải hộ mik nhoa
…………………………………………………………

giai-ho-mik-nhoa

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Sigridomena 6 years 2020-11-27T23:32:33+00:00 1 Answers 50 views 0

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  1. quangkhai
    0
    2020-11-27T23:33:43+00:00
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    Đáp án:

    $\begin{array}{l}
    a){9^2}{.3^6} = {\left( {{3^2}} \right)^2}{.3^6}\\
     = {3^4}{.3^6} = {3^{4 + 6}}\\
     = {3^{10}}\\
    b){2^5}{.4^2}.16\\
     = {2^5}.{\left( {{2^2}} \right)^2}{.2^4}\\
     = {2^5}{.2^4}{.2^4}\\
     = {2^{5 + 4 + 4}}\\
     = {2^{13}}\\
    c){9^2}{.27.3^5}\\
     = {3^4}{.3^3}{.3^5}\\
     = {3^{12}}\\
    d){5^5}{.25^2}.125\\
     = {5^5}{.5^4}{.5^3}\\
     = {5^{12}}\\
    e){7^4}{.343.49^2}\\
     = {7^4}{.7^3}{.7^4}\\
     = {7^{11}}\\
    f){100^2}{.10^5}.100\\
     = {\left( {{{10}^2}} \right)^2}{.10^5}{.10^2}\\
     = {10^4}{.10^5}{.10^2}\\
     = {10^{11}}
    \end{array}$

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Giải phương trình 1 ẩn: x + 2 - 2(x + 1) = -x . Hỏi x = ? ( )