(a2+a+1)/(a+1)-(a2-3a+1)/(a-3)
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(a2+a+1)/(a+1)-(a2-3a+1)/(a-3)(a2+a+1)/(a+1)-(a2-3a+1)/(a-3)(a2+a+1)/(a+1)-(a2-3a+1)/(a-3)
(a2+a+1)/(a+1)-(a2-3a+1)/(a-3)
(a2+a+1)/(a+1)-(a2-3a+1)/(a-3)
(a2+a+1)/(a+1)-(a2-3a+1)/(a-3)
( a2-9)/(a2+6a+9) ÷(a-3) /(a2+3a) - (a-a2) /(a2-1),
化简:(a2/a+1-a+1)/a2/a2-1
已知a2-a-6=0,则a2-2(a2-a+3)-1/2(a2-a-4)-a
|a|,a2,a2-1,a2+1的取值范围.
(a2-1)/(a2+2a+1)除以(a2-a)/(a+1) (a-2/(a+3)除以(a2-4)/(a2+6a+9)
a2-3a+1=0求a2/a4+1
已知a2+3a+1=0 求 1+1/a a2+1/a2
a1-a1^3-a2+a2^3为什么等于a1+a2【1-(a^2+a1a2+a^2)】
( a2-9)/(a2+6a+9) ÷(a-3) /(a2+3a) + (a-a2) /(a2-1) 化简 在从 0 1 2 3 选值带入
=IF(COUNTIF($A$1:A2,A2)>0,COUNTIF($A$1:A2,A2))
=IF(COUNTIF($A$1:A2,A2)>0,COUNTIF($A$1:A2,A2))
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先化简,再求值:(1-2a+a2)/(a-1)-(根号a2-2a+1)/(a2-a)-(1/a)+(根号a2),a=2-根号3在线等,快
已知a^2+a-1=0 (1)a-1/a (2)a2+1/a2 (3)a3+2a2+1