\(\frac{28^{15}\cdot3^{17}}{84^{16}}\)
\(=\frac{4^{15}\cdot7^{15}\cdot3^{17}}{4^{16}\cdot7^{16}\cdot3^{16}}\)
\(=\frac{4\cdot1\cdot3}{1\cdot7\cdot1}\)
\(\frac{12}{7}\)
Thuc hien phep tinh :
\(\frac{15^3+5.15^2-5^3}{18^3+6.18^2-6^3}\)
thuc hien phep tinh(1/2+3/4+7/8+15/16+31/32+63/64) -5
ban nao lam duoc minh like cho>,<...........................!!!!!!!
thuc hien phep tinh \(A=\frac{2.5^{22}-9.5^{21}}{25^{10}}\div\frac{5.\left(3.7^{15}-14\right)}{7^{15}.3.7^{15}}\)
thuc hien phep tinh
\(2\frac{1}{3}+\left(-0,25\right)+\frac{17}{22}-\frac{3}{4}+\frac{5}{22}\) \(\frac{4}{23}+\frac{5}{21}-\frac{4}{23}+\frac{1}{2}+\frac{16}{21}\)
thuc hien phep tinh :M=1+1/2(1+2)+1/3(1+2+3)+1/4(1+2+3+4)+...+1/16(1+2+3+...+16)
Thuc hien phep tinh :
\(\frac{3^8.16^2}{12^4.8^3}\)
thuc hien phep tinh :
\(\frac{36^4.36^3}{6^{12}}\)
Rut gon bieu thuc ( 2x like )
a)28^15 . 3^17
_____________
84^16
b) 3^10 + 6^2
________________
5.3^8 + 20
thuc hien phep tinh:
\(\frac{-1}{12}\)-(\(2\frac{5}{8}\)-\(\frac{1}{3}\))
