Tính
A = \(\frac{2^2.3^2.4^2...11^2}{6.10.15...78}\)
C = \(\frac{8^{20}+4^{20}}{4^{25}+6^{45}}\)
PN
Những câu hỏi liên quan
Tính
A = \(\frac{2^2.3^2.4^2...11^2}{6.10.15...78}\)
C = \(\frac{8^{20}+4^{20}}{4^{25}+64^5}\)
Biết câu b
C=(2.4)^20+4^20/4^25+(4^3)^5
=2^20.4^20+4^20/4^25+4^15
=4^20.(2^20+1)/4^15.(4^10+1)
=4^20.(2^20+1)/4^15.(2^20+1)
=4^20/4^15=4^5=1024.
k giúp mk nha! Chúc bạn học tốt.
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a)\(\frac{45^{10}.5^{10}}{75^{10}}\)
b)\(\frac{8^{10}+4^{10}}{8^4+4^{11}}\)
c)\(\frac{4^{20}-2^{20}+6^{20}}{6^{20}-3^{20}+9^{20}}\)
d) \(\frac{14^{16}.21^{32}.45^{48}}{10^{16}.15^{32}.7^{96}}\)
\(\frac{2^{15}.9^4}{6^6.3^3}+\frac{8^2.4^5}{2^{20}}\)
Tính
=\(\frac{2^{15}\cdot\left(3^2\right)^4}{2^6\cdot3^6.3^3}+\frac{\left(2^3\right)^2\cdot\left(2^2\right)^5}{2^{20}}\)
=\(\frac{2^9}{3}+\frac{1}{2^4}\)
=\(\frac{512}{3}+\frac{1}{16}=\frac{8192}{48}+\frac{3}{48}=\frac{8195}{48}\)
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Tính:
\(a.\frac{8^5.\left(-5\right)^8+\left(-2\right)^5.10^9}{2^{16}.5^7+20^8}\)
\(b.\frac{\left(-0,25\right)^{-5}.9^4.\left(-2\right)^{-3}-2^{-2}.6^9}{2^9.3^6+6^6.40}\)
\(c.\frac{2^{12}.3^5-4^6.9^2}{\left(2^2.3\right)^6+8^4.3^5}-\frac{5^{10}.7^3-25^5.49^2}{\left(125.7\right)^3+5^9.14^3}\)
1)Rút gọn
A=\(\frac{8^{10}+4^{10}}{8^4+4^{11}}\)
B=\(\frac{8^{11}.3^{17}}{27^{10}.9^{15}}\)
C=\(\frac{8^2.4^5}{2^{20}}\)
\(A=\frac{8^{10}+4^{10}}{8^4+4^{11}}\\ =\frac{8^4.8^6+4^{10}}{8^4+4^{10}.4}\\ =\frac{8^6}{4}\\ =\frac{262144}{4}\\ =65536\)
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\(A=\frac{8^{10}+4^{10}}{8^4+4^{11}}=\frac{\left(2^3\right)^{10}+\left(2^2\right)^{10}}{\left(2^3\right)^4+\left(2^2\right)^{11}}=\frac{2^{30}+2^{20}}{2^{12}+2^{22}}=\frac{2^{20}\left(2^{10}+1\right)}{2^{12}\left(2^{10}+1\right)}=2^8=256\)
\(B=\frac{8^{11}.3^{17}}{27^{10}.9^{15}}=\frac{\left(2^3\right)^{11}.3^{17}}{\left(3^3\right)^{10}.\left(3^2\right)^{15}}=\frac{2^{33}.3^{17}}{3^{30}.3^{30}}=\frac{2^{33}}{3^{43}}\)
\(C=\frac{8^2.4^5}{2^{20}}=\frac{\left(2^3\right)^2.\left(2^2\right)^5}{2^{20}}=\frac{2^6.2^{10}}{2^{20}}=\frac{1}{2^4}=\frac{1}{16}\)
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Bài1: Thực hiện phép tính
a) A=\(\frac{4^6.9^5+6^9.120}{8^4.3^{12}-6^{11}}\) b) B=\(\frac{4^2.25^2+32.125}{2^3.5^2}\)
Bài 2: Thực hiện phép tính
a) \(\frac{3^{15}.25^5}{15^{10}.27^2}\) b) \(\frac{8^2.4^5}{2^{20}}\)
ngu dễ mà không biết làm mày là đồ con lợn
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Dễ mà bạn
Xem thêm câu trả lời
thực hiện phép tính
A=\(\frac{2^{12}.3^4-4^5.9^2}{\left(2^2.3\right)^6+8^4.3^5}\)
B=\(\frac{8^5.5^8-2^5.10^9}{2^{16}.5^7+20^8}\)
C=\(\frac{4^5.9^4-2.6^4}{2^{10}.3^8+6^8.2^0}\)
ban nao co chuyen shin ko cho minh muon minh giai cho 10 bai nhu the i love pac pac
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\(A=\frac{2^{12}.3^4-4^5.9^2}{\left(2^2.3\right)^6+8^4.3^5}\)
\(A=\frac{2^{12}.3^4-2^{10}.3^4}{2^{12}.3^6+2^{12}.3^5}\)
\(A=\frac{2^{10}.3^4\left(2^2-1\right)}{2^{10}.3^4\left(2^2.3^2+2^2.3\right)}\)
\(A=\frac{2^2-1}{2^2.3^2+2^2.3}\)
\(A=\frac{4-1}{36+12}\)
\(A=\frac{3}{48}=\frac{1}{16}\)
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\(a.\frac{27.45+27.55}{2+4+6+...+14+16+18}\)
\(b.\frac{26.108-26.12}{32-28+24-20+16-12+8-4}\)
\(c.\frac{27.4500+135.550.2}{2+4+6+...+14+16+18}\)
\(d.\frac{48.700-24.45.20}{45-40+35-30+25-20+15-10+5}\)
\(a.\frac{27.45+27.55}{2+4+6+...+14+16+18}=\frac{27.100}{\frac{\left(2+18\right).9}{2}}=30\)
\(b.\frac{26.108-26.12}{32-28+24-20+16-12+8-4}=\frac{26\left(108-12\right)}{\left(32-28\right).4}=\frac{26.96}{4.4}=156\)
\(c.\frac{27.4500+135.550.2}{2+4+6+...+14+16+18}=\frac{270.450+270.550}{\frac{\left(2+8\right).9}{2}}\)
\(d.\frac{48.700-24.45.20}{45-40+35-30+25-20+15-10+5}=\frac{48.700-48.450}{5.5}\)\(=\frac{48\left(700-450\right)}{25}=\frac{48.250}{25}=480\)
#ĐinhBa
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a,frac{4^5.9^4-2.6^9}{2^{10}.3^8+6^8.20}
b,frac{27^2.8^5}{6^6.32^3}+frac{3^4.4^4}{2^2.6^2}
c,left(1+frac{1}{1.3}right)left(1+frac{1}{2.4}right)left(1+frac{1}{3.5}right)........left(1+frac{1}{20.22}right)
d,frac{3}{2}+frac{7}{6}+frac{13}{12}+frac{21}{20}+.....+frac{91}{90}
e,left(-2^2right)+sqrt{36}-sqrt{9}+sqrt{25} 20).20)
Đọc tiếp
a,\(\frac{4^5.9^4-2.6^9}{2^{10}.3^8+6^8.20}\)
b,\(\frac{27^2.8^5}{6^6.32^3}+\frac{3^4.4^4}{2^2.6^2}\)
c,\(\left(1+\frac{1}{1.3}\right)\)\(\left(1+\frac{1}{2.4}\right)\)\(\left(1+\frac{1}{3.5}\right)\)........\(\left(1+\frac{1}{20.22}\right)\)
d,\(\frac{3}{2}\)+\(\frac{7}{6}\)+\(\frac{13}{12}+\frac{21}{20}+.....+\frac{91}{90}\)
e,\(\left(-2^2\right)+\sqrt{36}-\sqrt{9}+\sqrt{25}\) 20).20)