\(\frac{6^5.9^{10}}{3^{34}.2^{13}}\)
\(=\frac{\left(2.3\right)^5.\left(3^2\right)^{10}}{3^{34}.2^{13}}\)
\(=\frac{2^5.3^5.3^{20}}{3^{34}.2^{13}}\)
\(=\frac{2^5.3^{25}}{3^{34}.2^{13}}\)
\(=\frac{1}{3^9.2^8}\)
tìm x biết:
A) \(\frac{7}{\left(x+3\right)\left(x+10\right)}\)\(+\frac{11}{\left(x+10\right)\left(x+21\right)}+\frac{13}{\left(x+21\right)\left(x+34\right)}=\frac{x}{\left(x+3\right)\left(x+34\right)}\)
B)\(\frac{3}{\left(x-4\right)\left(x-7\right)}+\frac{6}{\left(x-7\right)\left(x-13\right)}+\frac{15}{\left(x-13\right)\left(x-28\right)}-\frac{1}{x-28}=-\frac{5}{2}\)
tìm x1,x2,x3,...,x9
\(\frac{x1-1}{9}=\frac{x2-2}{8}=....=\frac{x8-8}{2}=\frac{x9-9}{1}\)
biết x1+x2+...+x9=900
\(\frac{6^{15}\cdot9^{10}}{3^{34}\cdot2^{13}}\)= ?
Tìm các số x1,x2,x3,...,x8,x9 biết \(\frac{x1+1}{9}=\frac{x2+2}{8}=\frac{x3+3}{7}=...=\frac{x8+8}{2}=\frac{x9+9}{1}\)
Tính giá trị của các biểu thức sau: \(A=\frac{\frac{2}{39}-\frac{1}{15}-\frac{2}{153}}{\frac{1}{34}+\frac{3}{20}-\frac{3}{26}}:\frac{1+\frac{2}{71}-\frac{5}{121}}{\frac{65}{121}-\frac{26}{71}-13}\) \(B=\frac{155-\frac{10}{7}-\frac{5}{11}+\frac{5}{23}}{403-\frac{27}{7}-\frac{13}{11}+\frac{13}{23}}+\frac{\frac{3}{5}+\frac{3}{13}-0.9}{\frac{7}{91}+0.2-\frac{3}{10}}\) \(C=\left(\frac{0.4-\frac{2}{9}+\frac{2}{11}}{1.4-\frac{7}{9}+\frac{7}{11}}-\frac{\frac{1}{3}-0.25+\frac{1}{5}}{1\frac{1}{6}-0.875+0.7}\right):\frac{2014}{2015}\)
Mình cần gấp bài này !!!
1/Tìm x, biết :
a/ \(\frac{7}{\left(x+3\right)\left(x+10\right)}+\frac{11}{\left(x+10\right)\left(x+21\right)}+\frac{13}{\left(x+21\right)\left(x+34\right)}+\frac{x}{\left(x+3\right)\left(x+34\right)}\)
b/ \(\frac{3}{\left(x-4\right)\left(x-7\right)}+\frac{6}{\left(x-7\right)\left(x-13\right)}+\frac{15}{\left(x-13\right)\left(x-28\right)}-\frac{1}{x-28}=\frac{-1}{20}\)
(69x210+1210):(219x273+15x49x94) = ?
\(\frac{x1-1}{9}=\frac{x2-2}{8}=......\frac{x9-9}{1}\)biết x1+x2+........+x9= 90
tìm x1 ;x2;x3;x4.............x9
x1 chỉ là tên gọi của x thui nha chứu không phải là x nhân 1 hay x cộng 1 đâu đó
Bài 1: Tính hợp lí nếu có thể:
a,\(13\frac{2}{7}:\frac{-8}{7}+2\frac{5}{7}:\frac{-8}{7}+\frac{4}{3}\)
b,\(\frac{5}{8}.1,31+34.\left(\frac{-1}{2}\right)^4-\frac{5}{8}.2,71\)
c,\(\frac{6^8.4^2-4^4.18^4}{27^3.8^4-3^0.2^{10}.8}\)
