(4.3+5.3+6.8+7.4+8.4+9.3+10.2) :27
= ≈?
Những câu hỏi liên quan
1, 5.3^x5.3^4 2, 7.4^x7.4^3 3, 8.7^x8.7^6
4, 2^x2.2^8 5, 6.8^{x-1}+8^{x+1}6.8^{19}+8^{21} 6, 4.3^{x-2}+2.3^{x+1}4.3^4+2.3^7
7,(3x-4)^6(3x-4)^2 (dfrac{1}{2}-dfrac{1}{6}):3^x+3^{x+2}3^{16}+3^{13}
Đọc tiếp
1, 5.3\(^x\)=5.3\(^4\) 2, 7.4\(^x\)=7.4\(^3\) 3, 8.7\(^x\)=8.7\(^6\)
4, 2\(^x\)=2.2\(^8\) 5, 6.8\(^{x-1}\)+8\(^{x+1}\)=6.8\(^{19}\)+8\(^{21}\) 6, 4.3\(^{x-2}\)+2.3\(^{x+1}\)=4.3\(^4\)+2.3\(^7\)
7,(3x-4)\(^6\)=(3x-4)\(^2\) (\(\dfrac{1}{2}\)-\(\dfrac{1}{6}\)):3\(^x\)+3\(^{x+2}\)=3\(^{16}\)+3\(^{13}\)
1: \(5\cdot3^x=5\cdot3^4\)
nên \(3^x=3^4\)
hay x=4
2: \(7\cdot4^x=7\cdot4^3\)
nên \(4^x=4^3\)
hay x=3
3: \(8\cdot7^x=8\cdot7^6\)
nên \(7^x=7^6\)
hay x=6
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: 5⋅3mũx=5⋅34
nên 3x=34
vậy x=4
2: 7⋅4x=7⋅43
nên 4x=43
vậy x=3
3: 8⋅7x=8⋅7mũ6⋅
nên 7x=76
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2.3=
3.3=
4.3=
5.3=
6.3=
7.3=
8.3=
9.3=
10.3=
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lAM THI TUI LAM CHU K THI KHONG
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{20.4^{15}.9^{10}-4.3^{21}.8^{10}}{10.2^{10}.6^{20}-2^{31}.27^7}
1/- Giá trị rút gọn của $\frac{20.4^{15}.9^{10}-4.3^{21}.8^{10}}{10.2^{10}.6^{20}-2^{31}.27^7}$20.4 15.9 10−4.3 21.8 1010.2 10.6 20−2 31.27 7 = ?
6^7.42-4^4.3^9
9^3.15.8^3-27^7.4^4
tính\(\frac{5.2^{30}.3^{18}-4.3^{20}.2^{27}}{5.2^9.3^{19}-7.2^{29}.3^{18}}\)
\(\dfrac{81^4.3^{10}.27^5.3^{12}}{3^{18}.9^3.243^2}\)
\(\dfrac{81^4.3^{10}.27^5.3^{12}}{3^{18}.9^3.243^2}\)
=\(\dfrac{\left(3^4\right)^4.3^{10}.\left(3^3\right)^5.3^{12}}{3^{18}.\left(3^2\right)^3.\left(3^5\right)^2}\)
= \(\dfrac{3^{16}.3^{10}.3^{15}.3^{12}}{3^{18}.3^6.3^{10}}\)
\(=\dfrac{3^{53}}{3^{34}}\)
= \(3^{19}\)
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\(?=\frac{20.4^{15}.9^{10}-4.3^{21}.8^{10}}{10.2^{10}.6^{20}-2^{31}.27^7}\)
1 tháng 11 2016 lúc 20:10
Giá trị rút gọn của : \(\frac{20.4^{15}.9^{10}-4.3^{21}.8^{10}}{10.2^{10}.6^{20}-2^{31}.27^7}\)
