giúp mình nha (. là nhân nhé)
1.thực hiện phép tính
a)(-\(\dfrac{2}{3}\)).\(\dfrac{3}{11}\)-(\(\dfrac{4}{3}\))\(^2\).\(\dfrac{3}{11}\)
b)(-1\(\dfrac{3}{4}\))\(^2\)-(\(\dfrac{1}{2}\))\(^4\)
c)(-\(\dfrac{1}{3}\))\(_7\).3\(^7\)
d)(5-\(\dfrac{1}{5}\)+\(\dfrac{1}{6}\))-(4-\(\dfrac{1}{5}\)+\(\dfrac{5}{6}\))-(3-\(\dfrac{1}{2}\)-\(\dfrac{1}{6}\))
2.tìm x
a)/x+\(\dfrac{3}{4}\)/-\(\dfrac{1}{2}\)=0
b)(x-1)\(^2\)-1=(-2)\(^3\)
c)1-(3-x)\(^3\)=(-13).2
d)(2-x)\(^4\)-17=3\(^2\).(-2)
giúp mình nhé (. là nhân nhé)
1.thực hiện phép tính
a)\(\dfrac{3}{14}\).\(\dfrac{7}{20}\)+\(\dfrac{13}{20}\)
b)(2.3\(^{2010}\)+12.3\(^{2010}\)-3.3\(^{2010}\)):3\(^{2012}\)
2.viết các kết quả của biểu thức sau dưới dạng 1 lũy thừa
a)(5\(^{14}\).25\(^{10}\)):125\(^3\)
b)(\(\dfrac{1}{2}\))\(^5\).(\(\dfrac{1}{64}\))\(^9\):(\(\dfrac{1}{16}\))\(^5\)
chọn đáp án đúng
1.are you ready?-no,i am not and.... 4.would you....show me a nice picture,ann?
a)she isn't,too b)so is she c)neither is she d)she is not a)like b)please c)to d)mind
2.they are glad.....you again 5.the train will leave......ten minutes
a)seeing b)to see c)see d)to seeing a)for b)about c)in d)at
3.everything is ready on the table,.....? 6.does your father go home.....weekends?
a)aren'tthey b)are they c)is it d)isn't it a)at b)during c)for d)in
7.don't tell him......that matter
a)to b)for c)on d)about