Tính giá trị của A=2.22+3.33+4.44+5.55+...+20.2020
Biết n!=1.2.3..n.Tính 1.1!+2.2!+3.3!+4.4!+5.5!=
n!=1.2.3. ...... .n Tính : 1.1!+2.2!+3.3!+4.4!+5.5!
Tính hợp lý:
\(\dfrac{4^2.25^2+2^5.5^3}{2^{10}.11+2^{10}.5}\)
\(\frac{20^5.5^{10}}{100^5}.\frac{4^6.9^5+6^9.120}{8^4.3^{12}-6^{11}}\)
\(\left(\frac{4}{9}+\frac{1}{3}\right)^2+\left(\frac{3}{4}\right)^3:\left(\frac{3}{4}\right)^2:\left(\frac{-2}{3}\right)^3\)
\(\left(\frac{-10}{3}\right)^5.\left(\frac{-6}{5}\right)^4\)
\(\frac{7^5.5^7}{35^7}\)
\(\frac{12^3+3.12^2+3^{^3}}{162}\)
Thực hiện phép tính
\(\dfrac{27^3.11+9^5.5}{3^9.2^4}\)
\(\dfrac{5^8+2^2.25^4+2^3.125^3-15^4.5^4}{4^2.625^2}\)
\(\dfrac{4^5.9^4-2.6^9}{2^{10}.3^8+6^8.20}\)
Giúp mik
Tìm x biết :
\(a,2^x=\frac{8^4}{16^3}\)
\(b,\left(-2\right)^x=-4^6-8^5\)
\(c,4^x=4.4^{10}-3.4^{10}\)
\(d,4.3^{x-1}+2.3^{x+2}=4.3^6+2.3^9\)
\(e,\left(\frac{1}{3}+\frac{1}{6}\right).2^x+2^{x+1}=2^{12}+2^{10}\)
Ai nhanh mk sẽ tik nha , cám ơn m.n nhiều lắm
Tính:
\(\frac{12^9.6^2}{9^4.4^3}\)