This exercise is very difficult and I can't do it -> This exercise is too,......
Thực hiện phép tính:
a.(-3/5)^6.(-5/3)^5
b.(4^3)^2.9^4/6^7.8^2
c.[(4/3)^-2.(3/4)^4]:(3/2)^6
Viết lại câu mà nghĩa của chúng không thay đổi
1. This exercise is very difficult and I can't do it
=> This exercise is too ............................................................................
Tìm x, biết
a, \(\left(\frac{12}{21}\right)^x=\left(\frac{3}{5}\right)^2-\left(-\frac{3}{5}\right)^4\)
b, \(\left(-\frac{3}{4}\right)^{3x-1}=\frac{256}{81}\)
Help me!!!
viết lại câu sao cho nghĩa ko đổi :
1. you have six children .
you have a big ...
2.this exercise is very difficult and i can't do it
this exercise is too....
3. no house in the street is older than this house .
this house........
thực hiện phép tính sau một cách nhanh nhất:
\(1\frac{5}{7}\cdot0.75-\frac{6}{7}\cdot1\frac{1}{3}+\frac{6}{7}\)
\(2017\cdot2018\left(\frac{2016}{2017}-\frac{2016}{2018}\right)\)
\(\left(\frac{1}{2}-1\right)\left(\frac{1}{3}-1\right)\left(\frac{1}{4}-1\right)....\left(\frac{1}{100}-1\right)\)
\(\frac{1023}{2+2^2+2^3+....+2^{10}}\)GIÚP MÌNH VỚI!HELP ME!
help me
\(\left(1-\frac{1}{2}\right).\left(1-\frac{1}{3}\right).\left(1-\frac{1}{4}\right).\left(1-\frac{1}{5}\right).......\left(1-\frac{1}{19}\right).\left(1-\frac{1}{20}\right)\)
ghi cách giải giùm mình nha cảm ơn nhìu :)))))
1) 1.2.3...9 - 1.2.3...8 - 1.2.3...7.82
2) \(\frac{\left(3.4.2^{16}\right)^2}{11.2^{13}.4^{11}-16^9}\)
3)13 - 12 + 11 + 10 - 9 + 8 - 7 - 6 + 5 -4 +3 +2 -1
1, tim x bết:
,\(\frac{\left(-5^4\right).\left(-15^2\right)-5^4.\left(-3^2.5\right)}{\left(-3^4\right).25^2-\left(-15^2\right).225.5}\)\(:\)\(\frac{x}{5}\)\(=\frac{-1}{6}\)
2, cho A=\(\frac{20}{30}+\frac{20}{70}+\frac{20}{126}+...+\frac{20}{798}\)
B=\(\left(\frac{41}{2}.\frac{42}{2}.\frac{43}{2}...\frac{80}{2}\right):\left(1.3.5...79\right)\)
So sánh A và B.
3, Tính nhanh.
\(\frac{0,875+\frac{1}{2}-7\%-\frac{1}{58}}{\frac{1}{25}-\frac{1}{2}-\frac{2}{7}+\frac{2}{203}}\)\(-125\%\)
HELP ME PLEASE......