求七年级几道计算题的答案（1)(x+a)(x+b)(2)(3x+7y)(3x-7y)(3)(3x+9)(6x+8)(4)(1/2x^2y-2xy+y^2)*3xy(5)(1/3a^2 b^3)*(-15a^2b^2)(6)(4a^3b-6a^2b^2+12ab^3)除以(2ab)(7)(a^bc)^2除以(ab^2c)(8)(3mn+1)(3mn-1)-8m^2n^2(9)((3a+b)^2-b^2)除以a(10)(x+
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求七年级几道计算题的答案（1)(x+a)(x+b)(2)(3x+7y)(3x-7y)(3)(3x+9)(6x+8)(4)(1/2x^2y-2xy+y^2)*3xy(5)(1/3a^2 b^3)*(-15a^2b^2)(6)(4a^3b-6a^2b^2+12ab^3)除以(2ab)(7)(a^bc)^2除以(ab^2c)(8)(3mn+1)(3mn-1)-8m^2n^2(9)((3a+b)^2-b^2)除以a(10)(x+
求七年级几道计算题的答案
（1)(x+a)(x+b)
(2)(3x+7y)(3x-7y)
(3)(3x+9)(6x+8)
(4)(1/2x^2y-2xy+y^2)*3xy
(5)(1/3a^2 b^3)*(-15a^2b^2)
(6)(4a^3b-6a^2b^2+12ab^3)除以(2ab)
(7)(a^bc)^2除以(ab^2c)
(8)(3mn+1)(3mn-1)-8m^2n^2
(9)((3a+b)^2-b^2)除以a
(10)(x+2)^2-(x+1)(x-1)
求七年级几道计算题的答案（1)(x+a)(x+b)(2)(3x+7y)(3x-7y)(3)(3x+9)(6x+8)(4)(1/2x^2y-2xy+y^2)*3xy(5)(1/3a^2 b^3)*(-15a^2b^2)(6)(4a^3b-6a^2b^2+12ab^3)除以(2ab)(7)(a^bc)^2除以(ab^2c)(8)(3mn+1)(3mn-1)-8m^2n^2(9)((3a+b)^2-b^2)除以a(10)(x+
1 x^2+(a+b)x+ab
2 9x^2-49y^2
3 18x^2+78x+72
4 3/2x^3 y^2-6x^2 y^2+3x y^3
5 -5a^4 b^5
6 2a^2-3ab+6b^2
7 a^3 c
8 m^2n^2-1
9 9a+6b
10 4x+5
x方+bx+ax+ab,9x方-49y方,18x方+75x+72,其他看不懂