\(\frac{512^4.128^6.64^2.2^{13}.4^7}{1024^2.64^5.128^3.8^4.512^4}=\frac{2^{117}}{2^{119}}=\frac{2^{117}}{2^{117}.2^2}=\frac{1}{2^2}=\frac{1}{4}\)
Rút gọn
\(\frac{2048^2.2^{11}.8^6.64^7.128^3}{1024^4.4^8.16^7.2^{30}}\)
rút gọn các phân số sau
\(\dfrac{2.\left(-13\right).9.10}{\left(-3\right).4.\left(-5\right).26}\)
\(\dfrac{2^2.2^3.5^7}{2^3.3^4.5^6}\)
1 Rút gọn
F=\(\frac{\left(\frac{2}{5}\right)^7.5^7+\left(\frac{9}{4}\right)^3:\left(\frac{3}{16}\right)^3}{2^7.5^7+512}\)
1/2+3/4+7/8+....+511/512+1023/1024
Tính A= \(\frac{1}{2}+\frac{1}{4}+\frac{1}{8}+...........+\frac{1}{512}+\frac{1}{1024}\)
Tính nhanh :
\(\frac{1}{2}+\frac{1}{4}+\frac{1}{8}+\frac{1}{16}+...+\frac{1}{512}+\frac{1}{1024}\)
lam vay co duoc ko
1/2+1/4+1/8+... +1/512+1/1024=1-1/2+1/2-1/4+...+1/512-1/1024=1-1/1024=1/1023
Cho A=\(\frac{\frac{1}{5}+\frac{1}{7}-\frac{1}{13}}{\frac{3}{5}+\frac{3}{7}-\frac{3}{13}}.\frac{\frac{3}{4}-\frac{3}{16}+\frac{1}{64}-\frac{3}{256}}{1-\frac{1}{4}+\frac{1}{16}-\frac{1}{64}}+\frac{5}{8}\)
a) Rút gọn A
b) tính 75% của A
RÚT GỌN
\(\frac{-15.46+3.8+46.12}{-24.\left(-9\right)+12.8.8.27}\)
