\(C=\dfrac{5\cdot2^{12}\cdot3^8-3^9\cdot2^{12}}{2^{15}\cdot3^8-2^{13}\cdot3^9}\)
\(=\dfrac{2^{12}\cdot3^8\left(5-3\right)}{2^{13}\cdot3^8\left(2^2-3\right)}=\dfrac{1}{2}\cdot\dfrac{2}{1}=1\)
3.C=5.4^6.9^4-3^9.(-8)^4/ 4.2^13.3^8+2.8^4.(-27)^3
Lm giúp mik nha, mik đang cần gấp
TÍNH GIÁ TRỊ BIỂU THỨC
BÀI 1:
3.C=5.4^6.9^4-3^9.(-8)^4/4.2^13.3^8+2.8^4.(-8)^4
AI GIÚP MIK VS Ạ :)))
AI NHANH MIK TIK LUÔN NHÉ,KHÔNG NÓI DỐI :)))
\(A=-5^{22}-\left\{-222-\left[-122-\left(100-5^{22}\right)+2022\right]\right\}\)
\(B=1+\dfrac{1}{2}\left(1+2\right)+\dfrac{1}{3}\left(1+2+3\right)+...+\dfrac{1}{20}\left(1+2+3+...+20\right)\)
\(C=\dfrac{5.4^6.9^4-3^9.\left(-8\right)^4}{4.2^{13}.3^8+2.8^4.\left(-27\right)^3}\)
Tính nhanh (nếu có thể):
a,\(\frac{27^2.8^5}{66.32^3}\)
b, \(\frac{4^6.9^5+6^9.120}{8^4.3^{12}-6^{11}}\)
c, \(\frac{\left(17\frac{8}{19}-16\frac{9}{18}\right).\left(17,5+16\frac{17}{51}-32\frac{15}{22}\right)}{\frac{7}{3.13}+\frac{7}{13.3}+\frac{7}{23.33}}\)
\(^{\dfrac{2^{10}.3^8+5.4^5.3^8}{2^{10}.27^3-2^{10}.9^4}}\) Rút Gọn
5.4^16.9^9 -4^2 .3^20 .8^9/5 .2^11.6^19-7.2^31 .27^6
\(\frac{9^3.2^{10}.27^5}{4^5.81^6}\)
\(\frac{27^4.2^5-3^{11}.4^3}{8^2.9^6}\)
Tính hợp lý:
a) A=\(2021^2\)-2020.(2021+1)
b) B=1+2-3-4+5+6-7-8+9+10-...+2018-2019-2020+2021
c) C=\(\dfrac{5.4^{15}.9^9-4.3^{20}.8^9}{5.2^9.6^{19}-7.2^{29}.27^6}\)
Tính giá trị biểu thức:
a, 5 3 + 3 4 + 4 . 2 + 27 - 3 : 4
b, 124 : 3 2 . 7 - 1 10 + 24 : 5 2
c, 245 - 4 16 : 8 + 2 4 . 3 2 - 9
d, 375 : 5 3 - 3 8 : 3 6 - 2 . 2 3
