Contact us
Choose a category below so we can get back to you as quickly as possible.
設這個二次三項式是:2x²;+bx-3 則當x=-1時,式子的值是5,即:2×(-1)²;+b×(-1)-3=5 2-b-3=5,b=-6 滿足要求的二次三項式是:2x²;-6x-3
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.