3.54*73+25*0.23-3.54*27+0.17+25
Làm hộ mình nhé
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a . 297+150:(493-47.10+7 b, 728:(73.3,54+0,17.25+3,54.27+0,23.25
=297+150:(493-470+7) =728:[(73.3,54+3,54.27)+(0,23.25+0,17.25)]
=297+150:30 =728:[3,54.(73+27)+25.(0,17+0,23)]
=297+5 =728:(3,54.100+25.0,4)
=302 =728:(354+10)
=728:364
=2
'.' là dấu phẩy
3.54 X 73 + 0.23 X 25 + 3.54 X 27 +0.77 X 25
= 3.54X(73+27)+25X(0.23+0.77)
=354+25
=400
\(A=\dfrac{27^3.54^2}{108^4}\)
\(=\dfrac{\left(3^3\right)^3.\left(3^3.2\right)^2}{\left(2^2.3^3\right)^4}\)
\(=\dfrac{3^9.3^6.2^2}{2^8.3^{12}}\)
\(=\dfrac{3^{15}.2^2}{2^8.3^{12}}\)
\(=\dfrac{3^3}{2^5}=\dfrac{27}{32}\)
Vậy A =\(\dfrac{27}{32}\)
A=\(\frac{72^3.54^2}{108^4}=\frac{\left(2^3.9\right)^3.\left(6.9\right)^2}{\left(6.2.9\right)^4}=\frac{2^9.9^3.6^2.9^2}{6^4.2^4.9^4}=\frac{2^5.9}{6^2}=\frac{2^5.3^2}{\left(2.3\right)^2}=\frac{2^5.3^2}{2^2.3^2}=2^3=8\)
\(A=\frac{72^3.54^2}{108}=\frac{\left(2^3.3^2\right)^2.\left(2.3^3\right)^2}{2^2.3^3}=\frac{2^6.3^4.2^2.3^6}{2^2.3^3}=\frac{2^8.3^{10}}{2^2.3^3}\)
\(A=2^6.3^7\)
\(\frac{72^3.54^2}{108}\)
\(=\frac{2^9.3^6.2^2.3^6}{2^2.3^3}\)
\(=\frac{2^{11}.3^{12}}{2^2.3^3}\)
\(=2^9.3^9\)
\(=6^9\)
\(\dfrac{72^3.54^2}{108^4}\)
\(=\dfrac{18^3.4^3.18^2.3^2}{18^4.6^4}\)
\(=\dfrac{18^5.2^6.3^2}{18^4.2^4.3^4}\)
\(=\dfrac{18.2^2}{3^2}\)
\(=\dfrac{9.2.2^2}{9}\)
\(=2^3=8\)
Đáp án:193.76
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