Contact us
Choose a category below so we can get back to you as quickly as possible.
3A+6B =6x²;+9ax-6x-3-6x²;+6ax-6 =(15a-6)x-9 和x無關則係數為0 15a-6=0 所以a=2/5
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.