(5^4-5^3)^3/125^4-64/125
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HS
0
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TN
1
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TD
22 tháng 7 2018
\(\frac{\left(5^4-5^3\right)}{125^4}-\frac{64}{125}\)
\(=\frac{\left(625-125\right)}{500}-\frac{64}{125}\)
\(=\frac{500}{500}-\frac{64}{125}\)
\(=0-0,51\)
\(=-0,51\)
PH
0
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NT
0
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5 tháng 6 2016
\(\frac{\left(5^4-5^3\right)}{125^5}=\frac{5^3\left(5-1\right)}{5^{15}}=\frac{5^3\times4}{5^{15}}=\frac{4}{5^{12}}<\frac{64}{5^{12}}=\frac{64}{5^6\times25^3}<\frac{64}{25^3}\)
VT<VP. ĐỀ BÀI SAI.
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NN
1
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28 tháng 6 2018
TRA LOI:
1+5/4+5/8+5/16+5/32+5/64=219/64
3+3/5+3/25+3/125+3/512=3,8