\(\frac{653}{434\sqrt[64]{65}}\)+ \(\frac{585}{4645}\)- 474748= bao nhieu
\(\frac{453}{434}\) + \(\frac{35653}{4564}\) x \(\frac{4536}{435636}\)=bao nhieu
Điền dấu > , < , = :
9999 ...10 000
653 211....653 211
99 999 ...100 000
43 256... 432 510
726 585...557 652
845 713...854 713
9999 < 10 000
653 211 = 653 211
99 999 < 100 000
43 256 < 432 510
726 585 > 557 652
845 713 < 854 713
Điền dấu > , < , = :
9999 ...10 000
653 211....653 211
99 999 ...100 000
43 256... 432 510
726 585...557 652
845 713...854 713
9999 < 10 000
653 211 = 653 211
99 999 < 100 000
43 256 < 432 510
726 585 > 557 652
845 713 < 854 713
9999<10000
653211=653211
99999<100000
43256<4325`10
726585>557652
845713<854713
Tính
a) \(2\sqrt{\frac{25}{16}}-3\sqrt{\frac{49}{36}}+4\sqrt{\frac{81}{64}}\)
b) \(\left(3\sqrt{2}\right)^2-\left(4\sqrt{\frac{1}{2}}\right)^2+\frac{1}{16}.\left(\sqrt{\frac{3}{4}}\right)^2\)
c) \(\frac{2}{3}\sqrt{\frac{81}{16}}-\frac{3}{4}\sqrt{\frac{64}{9}}+\frac{7}{5}.\sqrt{\frac{25}{196}}\)
a) = \(\frac{7}{2}\)
b) = \(\frac{643}{64}\)
c) = 0
Rút gọn: \(\frac{65}{64}\)và\(\frac{66}{65}\)
\(\frac{1}{\sqrt{1}}+\frac{1}{\sqrt{2}}+\frac{1}{\sqrt{3}}+\frac{1}{\sqrt{4}}+...+\frac{1}{\sqrt{64}}< 15\)
Tính
S= \(\frac{3}{2}+\frac{5}{4}+\frac{9}{8}+\frac{17}{16}+\frac{33}{32}+\frac{65}{64}-7\)
Luyện tập – Vận dụng 3
Rút gọn mỗi biểu thức sau:
a) \(\sqrt[3]{{\frac{{125}}{{64}}}}.\sqrt[4]{{81}}\)
b) \(\frac{{\sqrt[5]{{98}}.\sqrt[5]{{343}}}}{{\sqrt[5]{{64}}}}\)
a: \(=\dfrac{5}{4}\cdot3=\dfrac{15}{4}\)
b: \(=\sqrt[5]{\dfrac{98}{64}\cdot343}=\sqrt[5]{\left(\dfrac{7}{2}\right)^5}=\dfrac{7}{2}\)
Giải các phương trình:
a) \(\frac{x+1}{65}+\frac{x+2}{64}=\frac{x+3}{63}+\frac{x+4}{64}\)
b) \(\frac{x-12}{77}+\frac{x-11}{78}=\frac{x-74}{15}+\frac{x-73}{16}\)