\(=\dfrac{3^2\cdot2^{36}}{11\cdot2^{35}-2^{36}}=\dfrac{3^2\cdot2^{36}}{2^{35}\left(11-2\right)}=2\)
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Các câu hỏi tương tự
\(\dfrac{2}{1\times2}+\dfrac{2}{2\times3}+\dfrac{2}{3\times4}+.....+\dfrac{2}{99\times100}\)
Tính nhanh
\(\dfrac{12.48:0.5\times6.25\times4\times2}{2\times3.12\times1.25:0.25\times10}\)
text{Thực hiện các phép tính sau một cách hợp lý:}a) left(10^2+11^2+12^2right):left(13^2+14^2right)b) 1.2.3...9-1.2.3...8-1.2.3...7.8^2c) dfrac{left(3.4.2^{16}right)^2}{11.2^{13}.4^{11}-16^9}d) 1152-left(374+1152right)+left(-65+374right)e) 13-12+11+10-9+8-7-6+5-4+3+2-1
Đọc tiếp
\(\text{Thực hiện các phép tính sau một cách hợp lý:}\)
\(a\)) \(\left(10^2+11^2+12^2\right):\left(13^2+14^2\right)\)
\(b\)) \(1.2.3...9-1.2.3...8-1.2.3...7.8^2\)
\(c\)) \(\dfrac{\left(3.4.2^{16}\right)^2}{11.2^{13}.4^{11}-16^9}\)
\(d\)) \(1152-\left(374+1152\right)+\left(-65+374\right)\)
\(e\)) \(13-12+11+10-9+8-7-6+5-4+3+2-1\)
RÚT GỌN
a,dfrac{121.75.130.169}{39.60.11.198}
b,dfrac{left(3.4.2^{16}right)^2}{11.2^{13}.4^{11}.16^9}
c,dfrac{5.left(2^2.3^2right)^9.left(2^2right)^6-2.left(2^2.3right)^{14}.3^6}{5.2^{28}.3^{19}-7.2^{29}.3^{18}}
TÍNH HỢP LÍ
a,left(10^2+11^2+12^2right):left(13^2+14^2right)
TÍNH NHANH
a,13-12+11+10-9+8-7-6+-4+3+2-1
Đọc tiếp
RÚT GỌN
\(a,\dfrac{121.75.130.169}{39.60.11.198}\)
\(b,\dfrac{\left(3.4.2^{16}\right)^2}{11.2^{13}.4^{11}.16^9}\)
\(c,\dfrac{5.\left(2^2.3^2\right)^9.\left(2^2\right)^6-2.\left(2^2.3\right)^{14}.3^6}{5.2^{28}.3^{19}-7.2^{29}.3^{18}}\)
TÍNH HỢP LÍ
\(a,\left(10^2+11^2+12^2\right):\left(13^2+14^2\right)\)
TÍNH NHANH
\(a,13-12+11+10-9+8-7-6+-4+3+2-1\)
Tính:
a) M = \(\frac{1}{1\times2\times3}\)+\(\frac{1}{2\times3\times4}\)+\(\frac{1}{3\times4\times5}\)+ .... +\(\frac{1}{48\times49\times50}\)
Các bạn ghi đầy đủ lời giải ra nhé!
ĐỀ : Cho
\(A=\dfrac{1}{1\times2}+\dfrac{1}{3\times4}+\dfrac{1}{5\times6}+...+\dfrac{1}{2013\times2014}\)
\(B=\dfrac{1}{1008.2014}+\dfrac{1}{1009.2013}+\dfrac{1}{1010.2012}+...+\dfrac{1}{2014.1008}\)
Chứng tỏ A;B là số nguyên
Thực hiện phép tính
B = \(\dfrac{\left(3.4.2^{16}\right)^2}{11.2^{13}.4^{11}-16^9}\)
left(dfrac{2}{3}+dfrac{2}{13}+dfrac{2}{11}+dfrac{2}{6}right) left(dfrac{5}{4}+dfrac{5}{7}+dfrac{5}{6}+dfrac{5}{11}right)
___________________ X ___________________
left(dfrac{4}{3}+dfrac{4}{13}+dfrac{4}{11}+dfrac{4}{6}right) left(dfrac{9}{4}+dfrac{9}{7}+dfrac{9}{6}dfrac{9}{11}right)
Đọc tiếp
\(\left(\dfrac{2}{3}+\dfrac{2}{13}+\dfrac{2}{11}+\dfrac{2}{6}\right)\) \(\left(\dfrac{5}{4}+\dfrac{5}{7}+\dfrac{5}{6}+\dfrac{5}{11}\right)\)
___________________ X ___________________
\(\left(\dfrac{4}{3}+\dfrac{4}{13}+\dfrac{4}{11}+\dfrac{4}{6}\right)\) \(\left(\dfrac{9}{4}+\dfrac{9}{7}+\dfrac{9}{6}\dfrac{9}{11}\right)\)
tính hợp lý:
a) (2432515-315)+(51-126)-74
b) \(\dfrac{\left(12.2^{16}\right)^2}{11.2^{13}.4^{11}-16^9}\)