Contact us
Choose a category below so we can get back to you as quickly as possible.
근호 아래 는 0 보다 크다 4-x≥0 x≤4 분모 x-2≠0 x≠2 그래서 x≤4 및 x≠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.