\(\frac{8^5\times\left(-5\right)^8+\left(-2\right)^5\times10^9}{2^{16}\times5^7+20^8}\)
Tính
Những câu hỏi liên quan
a)Tìm x biết:\(\left|x-5\right|+\left|x-2\right|=5x\)
b)Rút gọn : A=\(\dfrac{8^2\times\left(-5\right)^2+\left(-2\right)^2\times10^9}{2^{16}\times5^7+20^8}\)
a: TH1: x<2
Pt sẽ là 5-x+2-x=5x
=>5x=-2x+7
=>x=1(nhận)
TH2: 2<=x<5
Pt sẽ là 5x=x-2+5-x=3
=>x=3/5(loại)
TH3: x>=5
Pt sẽ là 5x=x-5+x-2=2x-7
=>3x=-7
=>x=-7/3(loại)
b: \(A=\dfrac{2^6\cdot5^2+2^{11}\cdot5^9}{2^{16}\cdot5^7+2^{16}\cdot5^8}\)
\(=\dfrac{2^6\cdot5^2\left(1+2^5\cdot5^7\right)}{2^{16}\cdot5^7\left(1+5\right)}=\dfrac{1+2^5\cdot5^7}{2^{10}\cdot5^5\cdot6}\)
Đúng 0
Bình luận (0)
frac{left(-7right)^n}{left(-7right)^{n-1}}(nge1) Tính GTBT Bài 2 Tính GTBT theo cách hợp lí nếu có thểc) frac{5^3times3^3}{5^3times0,5+125times2,5}d)frac{5times7^1+7^3times25}{7^5125-7^3times50}e)frac{8^5timesleft(-5right)^8+left(-2right)^5times10^9}{2^{16}times5^7+20^8}h)frac{left(-0,25right)^{-5}times9^4timesleft(-2right)^{-3}-2^{-2}times6^3}{2^9times3^6+6^6times40}Bài 3 Chứng tỏ rằnga)
Đọc tiếp
\(\frac{\left(-7\right)^n}{\left(-7\right)^{n-1}}\)(n\(\ge1\)) Tính GTBT
Bài 2 Tính GTBT theo cách hợp lí nếu có thể
c) \(\frac{5^3\times3^3}{5^3\times0,5+125\times2,5}\)d)\(\frac{5\times7^1+7^3\times25}{7^5125-7^3\times50}\)e)\(\frac{8^5\times\left(-5\right)^8+\left(-2\right)^5\times10^9}{2^{16}\times5^7+20^8}\)
h)\(\frac{\left(-0,25\right)^{-5}\times9^4\times\left(-2\right)^{-3}-2^{-2}\times6^3}{2^9\times3^6+6^6\times40}\)
Bài 3 Chứng tỏ rằng
a)
Tính:
\(a.\frac{8^5.\left(-5\right)^8+\left(-2\right)^5.10^9}{2^{16}.5^7+20^8}\)
\(b.\frac{\left(-0,25\right)^{-5}.9^4.\left(-2\right)^{-3}-2^{-2}.6^9}{2^9.3^6+6^6.40}\)
\(c.\frac{2^{12}.3^5-4^6.9^2}{\left(2^2.3\right)^6+8^4.3^5}-\frac{5^{10}.7^3-25^5.49^2}{\left(125.7\right)^3+5^9.14^3}\)
Tính nhanh \(D=\frac{8^5.\left(-5^8\right)+\left(-2^5\right).10^9}{2^{16}.5^7+20^8}\)
Tính giá trị biểu thức (hợp lí nếu có thể)
a) \(\frac{8^5.\left(-5\right)^8+\left(-2\right)^5.10^9}{2^{16}.5^7+20^8}\)
b)\(\frac{\left(-0,25\right)^{-5}.9^4.\left(-2\right)^{-3}-2^{-2}.6^9}{2^9.3^6+6^6.40}\)
a) \(\frac{8^5.\left(-5\right)^8+\left(-2\right)^5.10^9}{2^{16}.5^7+20^8}\)
\(=\frac{2^{15}.5^8+\left(-2\right)^5.10^9}{2^{16}.5^7+2.10^8}\)
\(=\frac{5-2^4.10}{2}\)
\(=5-8.10\)
\(=5-80\)
\(=-75\)
Đúng 0
Bình luận (0)
Tính giá trị các biểu thức sau (hợp lí nếu có thể):
a) \(\dfrac{8^5.\left(-5\right)^8+\left(-2\right)^5,10^9}{2^{16}.5^7+20^8}\)
b) \(\dfrac{\left(-0,25\right)^{-5}.9^4.\left(-2\right)^{-3}-2^{-2}.6^9}{2^9.3^6+6^6.40}\)
Rút gọn biểu thức sau:
\(\frac{8^5.\left(-5\right)^8+\left(-2\right)^5.10^9}{2^{16}.5^7+20^8}\)
\(\frac{8^5.\left(-5\right)^8+\left(-2\right)^5.10^9}{2^{16}.5^7+20^8}\)
\(=\frac{\left(2^3\right)^5.5^8+\left(-2\right)^5.\left(2.5\right)^9}{2^{16}.5^7+\left(2^2.5\right)^8}\)
\(=\frac{2^{15}.5^8+\left(-2\right)^5.2^9.5^9}{2^{16}.5^7+2^{16}.5^8}\)
\(=\frac{2^{15}.5^8-2^{14}.5^9}{2^{16}.5^7\left(1+5\right)}\)
\(=\frac{2^{14}.5^8\left(2-5\right)}{2^{16}.5^7.\left(1+5\right)}\)
\(=\frac{2^{14}.5^8.\left(-3\right)}{2^{16}.5^7.6}\)
\(=\frac{-5}{8}\)
Đúng 0
Bình luận (0)
\(\dfrac{8^5.\left(-5\right)^8+\left(-2\right)^5.10^9}{2^{16}.5^7+20^8}\) giúp mình nha cảm ơn mọi người
\(\dfrac{8^5\cdot\left(-5\right)^8+\left(-2\right)^5\cdot10^9}{2^{16}\cdot5^7+20^8}\)
\(=\dfrac{2^{15}\cdot5^8-2^{14}\cdot5^9}{2^{16}\cdot5^7+2^{16}\cdot5^8}\)
\(=\dfrac{2^{14}\cdot5^8\left(2-5\right)}{2^{16}\cdot5^7\cdot\left(1+5\right)}\)
\(=\dfrac{5\cdot\left(-3\right)}{4\cdot6}=\dfrac{-15}{24}=\dfrac{-5}{8}\)
Đúng 0
Bình luận (0)
\(\frac{4}{3}\times\left(\frac{1}{5}+\frac{1}{4}\right)+\frac{4}{3}\times\left(\frac{3}{16}-\frac{3}{4}\right)\)
\(\frac{3^7\times5^5}{9^2\times15^2}\) \(\frac{8^4\times12^4}{8^{6\times}6^4}\) \(\frac{7^2\times8^4\times16^2}{32^4\times34^3}\)
MỌI NGƯỜI ƠI GIUP MÌNH VỚI