(a^2-3a+2)x^2+(2a^2+4a+1)xy+(a^2-a)y^2因式分解,谢谢了!
问题描述:
(a^2-3a+2)x^2+(2a^2+4a+1)xy+(a^2-a)y^2因式分解,谢谢了!
是(2a^2-4a+1)。。。。。。不过答案貌似都不对.....
答
(a²-3a+2)x²+(2a²-4a+1)xy+(a²-a)y²
=(a-1)(a-2)x²+(2a²-4a+1)xy+a(a-1)y²
=[(a-1)x+ay]*[(a-2)x+(a-1)y]