化简急3 [4/3a-(2/3a-1/3)]-3/2a

来源：学生作业帮编辑：作业帮分类：数学作业时间：2024/05/25 13:29:46

化简急
3 [4/3a-(2/3a-1/3)]-3/2a

解
原式
=3(4/3a-2/3a+1/3)-3/2a
=3(2/3a+1/3)-3/2a
=2a+1-3/2a
=3/2a+1
再问：化简求值 3xy²-[xy-2(xy- 3 /2x²y)+3 xy2]+3x²y,其中x=3,y=- 1 /3
再答：解原式 =3xy²-(xy-2xy+3x²y+3xy²)+3x²y =3xy²-(-xy+3x²y+3xy²)+3x²y =(3xy²-3xy²)+(3x²y-3x²y)+xy =xy =3×(-1/3) =-1
再答：第一题是=1/2a+1

a(a-1)(a-2)(a-3)(a-4)因式分解 a+a^2+a^3+a^4 (a 1)(a 2)(a 3)(a 【1】a+a=a×a a= [ ]【2】a×a=a÷a a=[ ]【3】a×a=a－a a=[ ] [4]a－a=a＋a 计算;(a^3)^4+a^10×a^2-a×a^2-a*a^3*a^8 (a+3a+5a+...+2009a)-(2a+4a+6a+...+2008a)= (a+3a+ 5a+```+2007a)-(2a+4a+6a+```+2008a)=? (a+3a+5a+...+2013a)-(2a+4a+6a+...+2012a)= 计算(a+3a+5a+.+2003a)-(2a+4a+6a+...+2004a) (a+3a+5a+.+2003a)-(2a+4a+6a+.+2004a) 化简; a-2a+3a-4a+5a-6a+``````-2006a+2007a. (-a)^3(-a)^2(-a)+(-a)4^(-a)^2