[1-﹙a2+8﹚/﹙a2+4a+4﹚]÷[﹙4a-4﹚/﹙a2+2a﹚]
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[1-﹙a2+8﹚/﹙a2+4a+4﹚]÷[﹙4a-4﹚/﹙a2+2a﹚]
[1-﹙a2+8﹚/﹙a2+4a+4﹚]÷[﹙4a-4﹚/﹙a2+2a﹚]
[1-﹙a2+8﹚/﹙a2+4a+4﹚]÷[﹙4a-4﹚/﹙a2+2a﹚]
[1-﹙a²+8﹚/﹙a²+4a+4﹚]÷[﹙4a-4﹚/﹙a²+2a﹚]
=[(a²+4a+4-a²-8﹚/﹙a²+4a+4﹚]×[﹙a²+2a﹚/﹙4a-4﹚]
=[(4a-4﹚/﹙a+2﹚²]×[﹙a²+2a﹚/﹙4a-4﹚]
=﹙a²+2a﹚/﹙a+2﹚²
=a/(a+2)
[1-﹙a2+8﹚/﹙a2+4a+4﹚]÷[﹙4a-4﹚/﹙a2+2a﹚]
15a2-{-4a2+[5a-8a2-(2a2-a)]+9a2-3a}2是平方
已知a2-a-6=0,则a2-2(a2-a+3)-1/2(a2-a-4)-a
因式分解a2-a2+4a-4b.
化简a2+2a/4-a2
(a2-1)/(a2+2a+1)除以(a2-a)/(a+1) (a-2/(a+3)除以(a2-4)/(a2+6a+9)
因式分解:(a2+1)2-4a(a2+1)+4a2
若a2-4a-1=0,求a2-(1/a2)的值
计算-4a(2a2+3a-1)的结果是A.-8a3+12a2-4a B.-8a3-12a2+1 C.-8a3-12a2+4a D.8a3+12a2+4a
已知a2-5a+1=0,求a2/﹙a∧4+a2+1﹚已知a²-5a+1=0,求a²/﹙a∧4+a²+1﹚
已知实数a满足a2+2a-1=0求(1 /a+1)-(a+3/a2-1)*(a2-2a+1/a2+4a+3)的值
设a=根号3-3,求[(a+1/a2-a)+(4/1-a2)]除以(a2+2a-3/a2+3a)的值
化简分式:(2a2+3a+2)/a+1-(a2-a-5)/a+2-(3a2-4a-5)/a-2+(2a2-8a+5)/a-3
化简分式:(2a2+3a+2)/a+1-(a2-a-5)/a+2-(3a2-4a-5)/a-2+(2a2-8a+5)/a-3
(a2-3a+2)x2+(2a2-4a+1)xy+(a2-a)y2因式分解如题
因式分解a4-4a2-4a-1
|4+2a|/根号a2+1=?
[a-﹙2ab-b2﹚/a]·[﹙a2+ab﹚/﹙a2-b2﹚]其中a=1,-3