\(8.8=8 ^2=64\)
\(9.9.9.9.9.9.9=9^7=4782969\)
\(8x8=8^2\)
\(9x9x9x9x9x9x9=9^7\)
chúc bn hc giỏi!!
^^
TÍNH :\(12345679\times9\times9=?\)
Tính \(12345679\times9\times9=?\)
\(C=\dfrac{5\times4^6\times9^4-3^9\times\left(-8\right)^4}{4\times2^{13}\times3^8+2\times8^4\times\left(-27\right)^3}\)
\(E=\dfrac{5\times4^{15}\times9^9-4\times3^{20}\times8^9}{5\times2^{10}\times6^{19}-7\times2^{29}\times27^6}\)
tính\(A\div B\)biết : \(A=5\times2^8\times6^{17}-7\times2^{26}\times9^8\)
\(B=10\times9^8\times4^{13}-4\times3^{18}\times8^8\)
Tính \(\frac{1}{6\times10}+\frac{1}{7\times9}+\frac{1}{8\times8}+\frac{1}{9\times7}+\frac{1}{10\times6}\)
Tính :
a)\(15\times20\div200=?\)
b)\(15^2\div\left(2+1\right)\times8=?\)
Tính nhanh:
a)\(357,8\times9+357,8\times20-357,8\times19\)
b)\(15\times9+15-\left(-9+1\right)\)
Ai nhanh nhất mk tk rùi tk lại mk nhóe!
\(\frac{5\times4^{15}\times9^9-4\times3^{20}\times8^9}{5\times2^9\times6^{19}-7\times2^{29}\times27^6}\)
giúp nhé tính
\(\frac{1}{2\times3}+\frac{1}{3\times4}+\frac{1}{4\times5}+\frac{1}{5\times6}+\frac{1}{6\times7}+\frac{1}{7\times8}+\frac{1}{8\times9}+\frac{1}{9\times10}\)
