[(3a-7)^2 -(a+5)^2 ]/(4a-24) 化简(过程)[(3a-7)^2 -(a+5)^2 ]/(4a-24) 化简已知a=6-b,c^2=ab-9,求a^-b +a^-c 的值
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[(3a-7)^2 -(a+5)^2 ]/(4a-24) 化简(过程)[(3a-7)^2 -(a+5)^2 ]/(4a-24) 化简已知a=6-b,c^2=ab-9,求a^-b +a^-c 的值
[(3a-7)^2 -(a+5)^2 ]/(4a-24) 化简(过程)
[(3a-7)^2 -(a+5)^2 ]/(4a-24) 化简
已知a=6-b,c^2=ab-9,求a^-b +a^-c 的值
[(3a-7)^2 -(a+5)^2 ]/(4a-24) 化简(过程)[(3a-7)^2 -(a+5)^2 ]/(4a-24) 化简已知a=6-b,c^2=ab-9,求a^-b +a^-c 的值
[(3a-7)^2 -(a+5)^2 ]/(4a-24)
=(3a-7-a-5)(3a-7+a+5)/4(a-6)
=(2a-12)(4a-2)/4(a-6)
=4(a-6)(2a-1)/4(a-6)
=2a-1
已知a=6-b,c^2=ab-9,求a^-b +a^-c 的值
题目看不懂
a-2a+3a-4a+5a-6a+7a-8a+9a-10a+11a.+99a-100a=
5(a*a*b-3*a*a*b)-2*(a*a*b-7*a*b*b)
[-a*(-2a)^3*(-a)^5]^7
合并同类项:a-2a-3a+4a+5a-6a-7a+8a+9a-10a-11a+12a+……+2008a+2009a-2010a-2011a
化简a+2a-3a-4q+5a+6a-7a-8a+...2001a+2002a-2003a-2004a
-[-7a平方-5a+(2a平方-3a)+2a]-4a平方. 很急啊.
化简(a+ 3)(a-3) (a-5)(a+7)-2a(a-1)
(a+3)(a-3)+(a-5)(a+7)-2a(a-1)怎么做?
a>0,求a+a^3+a^5+a^7+.a^2n-1
a-2a+3a-4a+5a-6a+...+99a-100a
化简; a-2a+3a-4a+5a-6a+``````-2006a+2007a.
(a+3a+5a+...+2009a)-(2a+4a+6a+...+2008a)=
(a+3a+5a+.+2009a)-(2a+4a+6a+.2008a)
计算(a+3a+5a+...+2009a)-(2a+4a+6a+...+2010a)
(a+3a+5a+...+2013a)-(2a+4a+6a+...+2012a)=
化简:a-2a+3a-4a+5a-6a+.+2010a+2011a.
计算(a+3a+5a+.+2003a)-(2a+4a+6a+...+2004a)
(a+3a+5a+.+2003a)-(2a+4a+6a+.+2004a)