Contact us
Choose a category below so we can get back to you as quickly as possible.
이 수는 X로 설정됩니다. 있음: (2X-3)^2=X^2+9 득X1 = 0, X2 = 4 이 숫자는 0, 4
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.