计算题1.(4ab-b^2)(-2bc)2.2x(x^2-1/2x+1)3.(-3x^2)(4x^3- 4/9x+1)4.(-2ab^2)^2(3a^3b-2ab-4b^3)5.(3/4x^2y- 1/2xy^2- 5/6y^3)(-4xy^2)6.5x(x^2-2x+4)+x^2(x-1)7.2a(a^2t3a-2)-3(a^3+2a^2-a+1)8.t^3-2t[t^2-2(t-3)]9.x-1/4(1- 3x/2)- 1/3x(2-x/2)10.x^n(x^n+1-x^n+

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计算题1.(4ab-b^2)(-2bc)2.2x(x^2-1/2x+1)3.(-3x^2)(4x^3-4/9x+1)4.(-2ab^2)^2(3a^3b-2ab-4b^3)5.(3/4x^2y-1/2

计算题1.(4ab-b^2)(-2bc)2.2x(x^2-1/2x+1)3.(-3x^2)(4x^3- 4/9x+1)4.(-2ab^2)^2(3a^3b-2ab-4b^3)5.(3/4x^2y- 1/2xy^2- 5/6y^3)(-4xy^2)6.5x(x^2-2x+4)+x^2(x-1)7.2a(a^2t3a-2)-3(a^3+2a^2-a+1)8.t^3-2t[t^2-2(t-3)]9.x-1/4(1- 3x/2)- 1/3x(2-x/2)10.x^n(x^n+1-x^n+
计算题
1.(4ab-b^2)(-2bc)
2.2x(x^2-1/2x+1)
3.(-3x^2)(4x^3- 4/9x+1)
4.(-2ab^2)^2(3a^3b-2ab-4b^3)
5.(3/4x^2y- 1/2xy^2- 5/6y^3)(-4xy^2)
6.5x(x^2-2x+4)+x^2(x-1)
7.2a(a^2t3a-2)-3(a^3+2a^2-a+1)
8.t^3-2t[t^2-2(t-3)]
9.x-1/4(1- 3x/2)- 1/3x(2-x/2)
10.x^n(x^n+1-x^n+x-1)
^2表示 的平方

计算题1.(4ab-b^2)(-2bc)2.2x(x^2-1/2x+1)3.(-3x^2)(4x^3- 4/9x+1)4.(-2ab^2)^2(3a^3b-2ab-4b^3)5.(3/4x^2y- 1/2xy^2- 5/6y^3)(-4xy^2)6.5x(x^2-2x+4)+x^2(x-1)7.2a(a^2t3a-2)-3(a^3+2a^2-a+1)8.t^3-2t[t^2-2(t-3)]9.x-1/4(1- 3x/2)- 1/3x(2-x/2)10.x^n(x^n+1-x^n+