\(\dfrac{2.8^4.27^2+4.6^9}{2^7.6^7+2^7.40.9^4}\)
\(A=\frac{2.8^4.27^2+4.6^9}{2^7.6^7+2^7.40.9^4}\)
RÚT GỌN PHÉP TÍNH SAU
Tính A= \(\frac{2.8^4.27^2+4.6^9}{2^7.6^7+2^7.40.9^4}\)
thực hiện phép tính \(\frac{2.8^4.27^2+4.6^9}{2^7.6^7.2^7.40.9^4}\)
a) Tính:
A = \(\dfrac{2.8^4.27^2+4.6^9}{2^7.6^7+2^7.40.9^4}\)
Gíup mình với cảm ơn các bạn very much!!!!!!!!!!!
BT1: Tìm n thuộc Z
\(\frac{1}{9}.27^n=3^n\)
\(\left(\frac{3}{7}\right)^n=\frac{81}{2401}\)
BT2: Tính
\(\frac{4^5.9^4-2.6^9}{2^{10}.3^8+6^8.20}\)
\(\frac{2.8^4.27^2+4.6^9}{2^7.6^6+2^7.40.9^4}\)
Rút gọn các biểu thức sau :
A=\(\frac{2.8^4.27^2+4.6^9}{2^7.6^7+2^7.40.9^4}\)
B=\(\frac{\left(\frac{2}{3}\right)^3.\left(-\frac{3}{4}\right)^2.\left(-1\right)^5}{\left(\frac{2}{5}\right)^2.\left(-\frac{5}{12}\right)^3}\)
Rút gọn
A=\(\frac{2.8^4.27^2+4.6^9}{2^7.6^7+2^7.40.9^4}\)
B=\(\frac{\left(\frac{2}{3}\right)^2.\left(-\frac{3}{4}\right)^2.\left(-1\right)^5}{\left(\frac{2}{5}\right)^2.\left(-\frac{5}{12}\right)^3}\)
Rút gọn
A=\(\frac{2.8^4.27^2+4.6^9}{2^7.6^7+2^7.40.9^4}\)
B=\(\frac{\left(\frac{2}{3}\right)^2.\left(-\frac{3}{4}\right)^2.\left(-1\right)^5}{\left(\frac{2}{5}\right)^2.\left(-\frac{5}{12}\right)^3}\)