Contact us
Choose a category below so we can get back to you as quickly as possible.
25 因為非負數有平方根,有兩個平方根的只能是正數,正數的兩個平方根互為相反數,所以 這個正數是25,它的平方根為5和-5,5和-5在數軸上相距10長度單位.
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.