问题 解答题

计算.

(1)(30x4-20x3+10x)÷10x

(2)(32x3y3z+16x2y3z-8xyz)÷8xyz

(3)(6an+1-9an+1+3an-1)÷3an-1

答案

(1)(30x4-20x3+10x)÷10x=3x3-2x2+1;

(2)(32x3y3z+16x2y3z-8xyz)÷8xyz=4x2y2+16xy2-1;

(3)(6an+1-9an+1+3an-1)÷3an-1=(-3an+1+3an-1)÷3an-1=-3a2+1.

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