Contact us
Choose a category below so we can get back to you as quickly as possible.
x的a分之b次方等於a次根號下x的b次方 x的2分之1次方等於2次根號下x的1次方,相當與根號x. x的3分之1次方等於3次根號下x的1次方. 比如,8的3分之1次方,其實就等於2.
We and our partners use cookies and other technologies to analyze traffic and optimize your experience. View more info and control your cookies settings at any time in our Cookies Policy.