(4a-6)(6+4a)-2a(8a-9)=
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(4a-6)(6+4a)-2a(8a-9)=(4a-6)(6+4a)-2a(8a-9)=(4a-6)(6+4a)-2a(8a-9)=原式=(4a-6)(4a+6)-(16a²-18a)=16
(4a-6)(6+4a)-2a(8a-9)=
(4a-6)(6+4a)-2a(8a-9)=
(4a-6)(6+4a)-2a(8a-9)=
原式=(4a-6)(4a+6)-(16a²-18a)
=16a²-36-16a²+18a
=18a-36
因式分解 原式=24a+16a^2-36-24a-16a^2+18a=18a-36
a-2a+3a-4a+5a-6a+7a-8a+9a-10a+11a.+99a-100a=
合并同类项:a-2a-3a+4a+5a-6a-7a+8a+9a-10a-11a+12a+……+2008a+2009a-2010a-2011a
a-2a-3a+4a+5a-6a-7a+8a+9a-10a-11a.+2008a+2009a-2010a-2011a如何合并同类项?
因式分解2a(a-4)^2-6a^2(4-a)+8a(a-4a)
求和:1,a+a^2,a^3+a^4+a^5,a^6+a^7+a^8+a^9,···(a不等于0)
分式的乘除:16-a平方/a平方+8a+16÷a-4/2a+8乘a-2/a+281-a平方/a平方+6a+9÷a-9/2a+6乘a+3/a+9
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)
(a+3a+5a...+2009a)-(2a+4a+6a+...+2010a)=?
计算:a²+9-6a分支2a²-4a-6/(4a+8)×4+3a-a²分支6+a-a²
计算:a²+9-6a分支2a²-4a-6/(4a+8)×4+3a-a²分支6+a-a²