Contact us
Choose a category below so we can get back to you as quickly as possible.
根據韋達定理兩根和為4,則另一根為2+根號3,兩根積為a,則a=2-根號3乘2+根號3=1
2.9x-1.4x=60 1.5x=60 15x=600 x=40
9x-4x=-2-15 5x=-17 x=-17/5
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.