5.2^9.6^19-7.2^8.27^6
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\(\frac{5.4^{15}.9^9-4.3^{20}.8^9}{5.2^9.6^{19}-7.2^{29}.27^6}=\frac{5.2^{30}.3^{18}-2^2.2^{27}.3^{20}}{5.2^9.2^{19}.3^{19}-7.2^{29}.3^{18}}\)
\(=\frac{2^{29}.3^{18}\left(5.2-3^2\right)}{2^{28}.3^{18}.\left(5.3-7.2\right)}=\frac{2.1}{1}=2\)
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B = 5.415.99 - 4.320.89
B = 5.(22)15.(32)9- (22).320.(23)9
B = 5.230.318 - 229.320
B = 229.318( 5.2 - 9)
B = 229.318.(10-9)
B = 229.318
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=\(\frac{5\cdot2^{30}\cdot3^{18}-2^2\cdot3^{20}\cdot2^{27}}{5\cdot2^9\cdot\left(2\cdot3\right)^{19}-7\cdot2^{29}\cdot3^{18}}\)=\(\frac{5\cdot2^{30}\cdot3^{18}-3^{20}\cdot2^{29}}{5\cdot2^{28}\cdot3^{19}-7\cdot2^{29}\cdot3^{18}}\)=\(\frac{2^{29}\cdot3^{18}\cdot\left(5\cdot2-3^2\right)}{2^{28}\cdot3^{18}\left(5\cdot3-7\cdot2\right)}\)=2
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\(\dfrac{5.4^{15}.9^9-4.3^{20}.8^9}{5.2^9.6^{19}-7.2^{29}.27^6}\) (sửa \(-9^9\rightarrow.9^9\))
\(=\dfrac{5.2^{30}.3^{18}-2^2.3^{20}.2^{27}}{5.2^9.2^{19}.3^{19}-7.2^{29}.3^{18}}\)
\(=\dfrac{5.2^{30}.3^{18}-2^{29}.3^{20}}{5.2^{28}.3^{19}-7.2^{29}.3^{18}}\)
\(=\dfrac{2^{29}.3^{18}\left(15-9\right)}{2^{28}.3^{18}\left(15-14\right)}\)
\(=2.6=12\)
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Ta có: \(C=\dfrac{5.2^9.6^{19}-7.2^{29}.27^6}{5.2^{25}.9^9-4.3^{20}.8^9}\)
\(=\dfrac{5.2^9.2^{19}.3^{19}-7.2^{29}.3^6.9^6}{5.2^{25}.3^9.3^9-4.3^{18}.3^2.2^9.2^9.2^9}\)
\(=\dfrac{5.2^{28}.3^{19}-7.2^{28}.2.3^{18}}{5.2^{25}.3^{18}-4.3^{18}.3^2.2^{25}.2^2}\)
\(=\dfrac{5.2^{28}.3^{18}.3-7.2^{28}.2.3^{18}}{3^{18}.2^{25}\left(5-4.3^2.2^2\right)}\)
\(=\dfrac{2^{28}.3^{18}\left(15-14\right)}{3^{18}.2^{25}\left(-139\right)}\)
\(=\dfrac{2^{25}.2^3}{2^{25}\left(-139\right)}=\dfrac{-8}{139}\)
Vậy \(C=\dfrac{-8}{139}.\)
Các bạn ơi mình cần gấp lắm ai giải được mình cho 3 like luông mình nói là giữ lời không thì mình cho các bạn nick này của mình
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\(\frac{5.4^{15}.9^9-4.3^{20}.8^9}{5.2^9.6^{19}-7.2^{29}.27^6}\)
\(=\frac{5.\left(2^2\right)^{15}.\left(3^2\right)^9-2^2.3^{20}.\left(2^3\right)^9}{5.2^9.\left(2.3\right)^{19}-7.2^{29}.\left(3^3\right)^6}\)
\(=\frac{5.2^{30}.3^{18}-2^{29}.3^{20}}{5.2^{28}.3^{19}-7.2^{29}.3^{18}}\)
\(=\frac{2^{29}.3^{18}.\left(5.2-3^2\right)}{2^{28}.3^{18}.\left(5.3-7.2\right)}\)
\(=\frac{2.\left(5.2-3^2\right)}{5.3-7.2}=\frac{2.\left(5.2-3^2\right)}{15-14}=2.\left(5.2-3^2\right)\)
5.415.99−4.320.895.29.619−7.229.276
=5.(22)15.(32)9−22.320.(23)95.29.(2.3)19−7.229.(33)6
=5.230.318−229.3205.228.319−7.229.318
=229.318.(5.2−32)228.318.(5.3−7.2)
=2.(5.2−32)5.3−7.2 =2.(5.2−32)15−14 =2.(5.2−32)