\(\dfrac{2.6^9-2^5.18^4}{2^2.6^8}\\ =\dfrac{2.\left(2.3\right)^9-2^5.\left(2.3^2\right)^4}{2^2.\left(2.3\right)^8}\\ =\dfrac{2.2^9.3^9-2^5.2^4.\left(3^2\right)^4}{2^2.2^8.3^8}\\ =\dfrac{2.2^9.3^9-2^5.2^4.3^8}{2^{10}.3^8}\\ =\dfrac{2^{10}.3^9-2^9.3^8}{2^{10}.3^8}\\ =\dfrac{2^9.3^8\left(2.3-1\right)}{2^{10}.3^8}\\ =\dfrac{6-1}{2}\\ =\dfrac{5}{2}\)
tính
a |-5|.7^4+7^3.25/7^5.125-7^5.50
b (-0,25)^-5.9^4.(-2)^-3 - 2^-2.6^9/2^9.3^6 +6^6.40
Tính:
\(\xrightarrow[2^{10}.3^8+6^8.20]{4^5.9^4-2.6^9}\)
Tk cho bạn nhanh nhất!!! ✔
Bài 1: Rút gọn phân số:
\(M=\dfrac{4^{5.}9^4-2.6^9}{2^{10}.3^8+6^8.20}\)
Giúp mk vs, ai nhanh mk sẽ tick
tính giá trị biểu thức
\(\dfrac{6^2.6^3}{3^5}\)
\(\dfrac{25^2.4^2}{5^5.-2^5}\)
\(\dfrac{0,125^5.2,4^5}{-0,3^5.0,001^3}\)
\((2\dfrac{3}{4}+\dfrac{1}{2})\)
Tính giá trị của các biểu thức sau :
a) \(\dfrac{6^2.6^3}{3^5}\) b) \(\dfrac{25^2.4^2}{5^5.\left(-2\right)^5}\)
c) \(\dfrac{\left(0,125\right)^5.\left(2,4\right)^5}{\left(-0,3\right)^5.\left(0,01\right)^3}\)
Bài 1:Tính giá trị biểu thức
\(_{1,}\)\(3^2.\dfrac{1}{243}.81^2.\dfrac{1}{3^3}\)
\(_{2,}\)(\(4.2^5\)):\(\left(2^3.\dfrac{1}{16}\right)\)
\(_{3,}\)\(\left(2^{-1}+3^{-1}\right)+\left(2^{-1}.2^0\right):2^3\)
\(_{4,}\)\(\left(-\dfrac{1}{3}\right)^{-1}-\left(-\dfrac{6}{7}\right)^0+\left(\dfrac{1}{2}\right)^2:2\)
\(_{5,}\)[(0,1)\(^2\)]\(^0\)+[(\(\dfrac{1}{7}\))\(^{-1}\)]\(^2\).\(\dfrac{1}{49}.\left[\left(2^2\right)^3:2^5\right]\)
Bài 2:Rút gọn biểu thức
a,\(\dfrac{4^5.9^4-2.6^9}{2^{10}.3^8+6^8.20}\)
b,\(\dfrac{3^6.45^4-15^{13}.5^{-9}}{27^4.25^3+45^6}\)
c,\(\left(\dfrac{2}{5}\right)^7.5^7+\left(\dfrac{9}{4}\right)^3:\left(\dfrac{3}{16}\right)^3\)
\(\overline{2^7.5^2+512}\)
d,\(\left(\dfrac{2}{3}\right)^3.\left(-\dfrac{3}{4}\right)^2.\left(-1\right)^5\)
\(\overline{\left(\dfrac{2}{5}\right)^2}.\left(-\dfrac{5}{12}\right)^3\)
\(\dfrac{2\cdot6^9-2^5\cdot18^4}{2^2\cdot6^8}\)
Tính
\(\dfrac{-15}{8}-\dfrac{4}{9}+\dfrac{-1}{8}+\dfrac{-5}{7}+\dfrac{-5}{9}\)
\(\left(\dfrac{-3}{4}\right)^3-\left(\dfrac{1}{2}\right)^6+2\)
-6,25+ 2,475- 12,123
GIPUPS MÌNH NHA CÁC BẠN
Viết các biểu thức sau dưới dạng lũy thừa
a) \(2^2.9.\dfrac{1}{54}.\left(\dfrac{4}{9}\right)^2\)
b) \(2^3.2^5.\left(\dfrac{3}{2}\right)^4\)
c) \(\dfrac{\left(\dfrac{1}{2}\right)^3.\dfrac{1}{2^2}.8}{\left(-2^3\right)^2.16}.\left(2^2\right)^3\)
Viết các biểu thức sau dưới dạng lũy thừa
a) \(2^2.9.\dfrac{1}{54}.\left(\dfrac{4}{9}\right)^2\)
b) \(2^3.2^5.\left(\dfrac{3}{2}\right)^4\)
c) \(\dfrac{\left(\dfrac{1}{2}\right)^3.\dfrac{1}{2^2}.8}{\left(-2^3\right)^2.16}.\left(2^2\right)^3\)
