Tính D :
\(D = 3^2 \times9^2\times243+18\times243\times324+723\times729\)
\(D = 3^2 \times9^2\times243+18\times243\times324+723\times729\)
Tính D
D = 32 × 92 × 243 + 18 × 243 × 324 + 723 × 729
D = 9 x 81 x 243 + 18 x 243 x 324 + 723 x 729
D = 729 x 243 + 243 x 5832 + 2169 x 243
D = 243 x (729 + 5832 + 2169 )
D = 243 x 8730
D = 2121390
D = 32 × 92 × 243 + 18 × 243 × 324 + 723 × 729
D = 9 x 81 x 243 + 324 x 6 x 243 x 3 + 723 x 729
D = 729 x 243 + 1944 x 729 + 723 x 729
D = 729 x ( 243 + 1944 + 723 )
D = 729 x 2910
D = 2121390
\(D=3^2.9^2.243+18.243.324+723.729\)
\(=3^2.81.243+3.6.243.4.81+81.9.3.243\)ư
\(=3.81.243\left(3+24+9\right)\)
\(=3.3^5.3^4.36\)
\(=3^{10}.36\)
\(=2125764.\)
Tính D :
\(D=3^2\times9^2\times243+18\times243\times324+723\times729\)
×3
D=243×(32×92 +18×324+723×3)
D=243×8730
D=2121390.
Kết quả dài quá nên chắc đúng
a)
\(A=5\times4^{15}\times9^9-4\times3^{20}\)
\(B=5\times2^9\times6^{19}-7\times2^{29}\times27^6\)
Tính \(A:B\)b) \(C=2181\times729+243\times27\)
\(D=3^2\times9^2\times243+18\times243\times324+723\times729\)
Tính \(C:D\)viết các tích sau đây dưới dạng lũy thừa của một số
\(a=8^2\times32^4\)
\(b=27^3\times9^4\times243\)
\(a=\left(2^3\right)^2\times\left(2^5\right)^4=2^6\times2^{20}=2^{26}\)
\(b=\left(3^3\right)^3\times\left(3^2\right)^4\times3^5=3^9\times3^6\times3^5=3^{20}\)
8.4^ 2 . 32^4 = 32^ 2. 32^4 = 32.32.32.32.32.332
tương tự nhé bạn
Theo mình nghĩ bạn đóng ngoặc vào nhìn cho dễ nhé ronaldoxunghe
M=\(\frac{9^4\times27^5\times3^6\times3^4}{3^8\times81^4\times243\times8^2}\)
N=4\(\frac{4^6\times9^5\times6^9\times120}{8^4\times3^{12}-6^{11}}\)
a. \(\frac{3^2\times64^2-12^2\times16^2\times19+51\times33}{3+6+9+...+96+99}\)
b. \(\frac{6^3\times9^7\times4^3-16^2\times81^4}{\left(24\times3\right)^2}\)
c. \(\frac{21\times5^{21}\times5^8-25^{13}}{\left(4\times5^{14}\right)^2}\)
d. \(\frac{81^4\times3^{10}\times27^5\div3^{12}}{9^9\div9^3\times243^3}\)
e. \(\frac{18^6\div2^{11}\div9^3\times4^3}{32^2\div6^9\times3^6}\)
M=\(\frac{9^4\times27^5\times3^6\times3^4}{3^8\times81^4\times243\times8^2}\)
Rút gọn phân số:
a)\(\frac{9}{33-6}\)
b)\(\frac{7}{10^2+6\times10^2}\)
c)\(\frac{11\times12+33\times36+55\times60}{22\times24+66\times72+110\times120}\)
d)\(\frac{9^4\times27^5\times3^6\times4^4}{3^8\times81^4\times243\times8^2}\)
e)\(\frac{199919991999}{200020002000}\)
a) \(\frac{9}{33-3}=\frac{1}{3}\)
b) \(\frac{7}{100+6\times100}=\frac{1}{100}\)
c) \(\frac{11\times22+33\times36+55\times60}{22\times24+66\times72+110\times120}=\frac{1}{4}\)
d) \(\frac{9^4\times27^5\times3^6\times4^4}{3^8\times81^4\times243\times8^2}=4\)
e) \(\frac{199919991999}{200020002000}=\frac{1999}{2000}\)
Cho C = 2181 - 729 + 243 . 81 - 27
D = 3 mũ 2 . 9 mũ 2 . 243 + 18 . 243 . 324 . 243 + 723 . 729
Tính C : D
Ta có :C= 2181-729+243.81-27
=2052+19683-27
C=21108
D=\(3^2.9^2.243+18.243.324.243\)
=9.81.243+18.243.324.243
=177147+344373768
=344550915
Ta có : C:D=21108:344550915=0,00006