1.(2a^2b)·(-1/2ab^2)^3

来源：学生作业帮编辑：灵鹊做题网作业帮分类：综合作业时间：2024/05/11 20:04:20

1.(2a^2b)·(-1/2ab^2)^3
2.(-2/5xy^2z)·(-1/2y^2z^2)
3.(2x)^3·y^3÷(16xy^2)
4.(-a^2b)^4÷(-1/2ab^2)
5.-2x^2y(3xy^2z-2y^2z)
6.(-2/3a)(1/2a^2+1/6a+1/4)
7.(x-3y)(x-1/2y)
8.(-a-3b)(7a+2b)
9.(9x-2y)(x+y)
10.(-1/3p+1/2p)(-2/3p-1/4p)
11.(-1/5a^3x^4-9/10a^2x^3)÷(-3/5ax^2)
12.(-2πr^2h+3πrh^2)÷(1/2πrh)

1.(2a^2b)·(-1/2ab^2)^3
=2a^2b*(-1/8)a^3b^6
=-(1/4)a^5b^7
2.(-2/5xy^2z)·(-1/2y^2z^2)
=(1/5)xy^4z^3
3.(2x)^3·y^3÷(16xy^2)
=8x^3y^3/16xy^2
=(1/2)x^2y
4.(-a^2b)^4÷(-1/2ab^2)
=a^8b^4/(-1/2ab^2)
=-(1/2)a^7b^2
5.-2x^2y(3xy^2z-2y^2z)
=-6x^3y^3z+4x^2y^3z
6.(-2/3a)(1/2a^2+1/6a+1/4)
=-(1/3)a^3-(1/9)a^2-(1/6)a
7.(x-3y)(x-1/2y)
=x^2+(7/2)xy+(3/2)y^2
8.(-a-3b)(7a+2b)
=-7a^2-2ab-21ab-6b^2
=-7a^2-23ab-6b^2
9.(9x-2y)(x+y)
=9x^2-2xy+9xy-2y^2
=9x^2+7xy-2y^2
10.(-1/3p+1/2p)(-2/3p-1/4p)
=(2/9)p^2+(1/12)pq-(1/3)pq-(1/8)q^2
=(2/9)p^2-(1/4)pq-(1/8)q^2
11.(-1/5a^3x^4-9/10a^2x^3)÷(-3/5ax^2)
=(1/3)a^2x^2+(3/2)ax
12.(-2πr^2h+3πrh^2)÷(1/2πrh)
=-4r+6h

1.已知A-B=-根号2 AB=1/3求代数式 (A-B)+A*A+B*B+AB 1.（4/3a^2b^2-2ab)*1/2ab 2.-2a^2*(-1/2ab+b^2)-5a*(a^2b+ab^2) 如果a+b=3,ab=-1,那么(a+b)2-a-b+ab=? a+b/2ab 2AB/A+B 已知a^2+ab+b^2|ab(a+b),求证(a-b)^3>3ab 因式分解a^+b^+2a^b+2ab^+a^+b^+3ab+a+b 当a-b=-1,ab=-2,(2a-3b-ab)-(a-2b+3ab) 已知a-b=-1,ab=-2,求代数式（3a-4b-ab)-(a-2b+3ab) 计算ab/(a+b-1)(a+b)+ab/(a+b)(a+b+1)+ab/(a+b+1)(a+b+2)+.+ab/(a+ a^2b-ab+2ab^2-5a^b-4ab+3ab^2化简快已知a+b=A ab=A+2008 1-2(a+ab)+(ab-2b)=3A 求a+b ab的值