(a2-3a+2)x2+(2a2-4a+1)xy+(a2-a)y2因式分解如题
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(a2-3a+2)x2+(2a2-4a+1)xy+(a2-a)y2因式分解如题(a2-3a+2)x2+(2a2-4a+1)xy+(a2-a)y2因式分解如题(a2-3a+2)x2+(2a2-4a+1)
(a2-3a+2)x2+(2a2-4a+1)xy+(a2-a)y2因式分解如题
(a2-3a+2)x2+(2a2-4a+1)xy+(a2-a)y2因式分解
如题
(a2-3a+2)x2+(2a2-4a+1)xy+(a2-a)y2因式分解如题
建议a2之类的 最好写成a² 或者写成x^2 ,以便于判别和解题
(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]
(a2-3a+2)x2+(2a2-4a+1)xy+(a2-a)y2因式分解如题
因式分解x2-3x-(a2+a-2)
15a2-{-4a2+[5a-8a2-（2a2-a）]+9a2-3a}2是平方
1,先化简再求值:a-1/a+2*a2-4/a2-2a+1÷1/a2-1,其中a2-a=0...1,先化简再求值:a-1/a+2*a2-4/a2-2a+1÷1/a2-1,其中a2-a=02,(x2-3x/x2-1)+(2x-1/x-1)=0
1.分解因式3x2-12-8a+20x22.化简1/(x2+x)+1/(x2+3x+2)+1/(x2+5x+6)+1/(x2+7x+12)(a2+3a+3)/(a2+3a+2)-(a2+3a-2)(4-a2)+(1+2a-2a2)/(a2-4-2)
化简a2+2a/4-a2
已知a2-a-6=0,则a2-2(a2-a+3)-1/2(a2-a-4)-a
（a2-4/a2-4a+3）×（a-3/a2+3a+2=?
(a2-1)/(a2+2a+1)除以(a2-a)/(a+1) (a-2/(a+3)除以(a2-4)/(a2+6a+9)
已知集合A={x|x2+2ax+(a2-4)
分解因式：x2+3ax-10a2-x+2a
3a2+2a2-(2a2-2a)+(3a+a2)
3a2+a2-(2a2-2a)+(3a-a2) 2＝平方
3a2+a2-(2a2-2a)+(3a-a2)怎么解?急
计算3a2+a2-（2a2-2a）+（3a-a2）
3a2+a2-（2a2-2a）+（3a-a2)
5a2-[a2+(5a2-2a)-2(a2-3a)]
5a2-[a2+(5a2-2a)-2(a2-3a)]的值是多少