Contact us
Choose a category below so we can get back to you as quickly as possible.
(x2+3x+2)5展開式的含x的項是由5個多項式在按多項式乘法展開時僅一個多項式出3x,其它4個都出2∴展開式中x的係數為C51•3•24=240故選項為B
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.