Tinh :
a) \(6\cdot\left(\dfrac{2}{3}\right)^3-3\left(-\dfrac{2}{3}\right)^2-2\left(-\dfrac{2}{3}\right)+5\)
a) \(\dfrac{\left(\dfrac{1}{2}\right)^2-\left(\dfrac{3}{2}\right)^3\cdot\left(\dfrac{1}{2}\right)^0}{5-2.2017^0}\)
chọn chủ đề là toán mà đăng bạn
Tính
A=\(\dfrac{3^6\cdot45^4-15^{13}\cdot\left(\dfrac{1}{5}\right)^9}{27^4\cdot25^3+45^6}\)
rút gọn phân số
\(\frac{\left(-5.\right).40.4^3}{135.\left(-2\right)^{14}.\left(-100\right)^0}\)
bài 1: Tính
a) \(\dfrac{-5}{7}\) . \(\dfrac{2}{11}\) + \(\dfrac{-5}{7}\) . \(\dfrac{9}{11}\) + 1\(\dfrac{5}{7}\)
b) \(\dfrac{-3}{14}\) +\(\dfrac{5}{8}\) -\(\dfrac{1}{2}\)
c) ( \(\dfrac{1}{4}\) +\(\dfrac{-5}{13}\))+( \(\dfrac{2}{11}\) + \(\dfrac{-8}{13}\) + \(\dfrac{3}{4}\) )
d) ( \(\dfrac{21}{31}\) + \(\dfrac{-16}{7}\) )+( \(\dfrac{44}{53}\) +\(\dfrac{10}{31}\) )+\(\dfrac{9}{53}\)
e) \(\dfrac{1}{9}\) - \(\dfrac{5}{6}\) -4
___________
\(\dfrac{7}{12}\) - \(\dfrac{1}{36}\) -10
giúp em
bài 1: thực hiện phép tính:
a) \(\dfrac{-5}{12}\) . \(\dfrac{4}{19}\) +\(\dfrac{-7}{12}\) . \(\dfrac{4}{19}\) -\(\dfrac{40}{57}\)
b) \(\dfrac{1}{3}\) .\(\dfrac{4}{5}\) +\(\dfrac{1}{3}\).1.\(\dfrac{1}{5}\) +( \(\dfrac{-3}{2}\) )^2
giúp em
Bài 1: thực hiện phép tính:
c) ( \(\dfrac{-1}{2}\) )^3 : 1\(\dfrac{3}{8}\)-25%. (-6\(\dfrac{2}{11}\) )
giúp em
IX.
1.. the toystore is to the left of the restaurant. RIGHT
2. the hospital is behid the museum . FRONT
3. there is a small garden in my school . HAS
4. david's house isn't far from the station . NEAR
5. the bookstore is to the left of the toystore and to the right of the police station . BETWEEN
1, Tìm x;y \(\in Z\)
a, \(xy-x-y=2\)
b, \(3xy+x+y=1\)
c,\(x\left(y-1\right)=y+2\)
d, \(\frac{1}{x}+\frac{1}{y}=\frac{1}{4}\left(x;y\in N\right)\)
3 k lun
1._ _ _ _ is your birthday ?
2.He want to _ _ a worker .
3.Turn right . It's _ _ your left.
4.It's _ _ _ _ in autumn.
5. How far is it _ _ _ _ Vinh to Ha Noi?
6.We _ _ _ going to play hide and seek.
7._ _ _ you visit Tuan Chau island? Yes, I did.
8.What do you usually do _ _ winter
