计算:(1)6a3-(a2+1)•a(2)x(4x-y)-(2x+y)(2x-y)(3)(2a2-3a+1)•(-2a)-(4a3-3a2+2a)÷2a.-数学

题目简介

计算:(1)6a3-(a2+1)•a(2)x(4x-y)-(2x+y)(2x-y)(3)(2a2-3a+1)•(-2a)-(4a3-3a2+2a)÷2a.-数学

题目详情

计算:
(1)6a3-(a2+1)•a             
(2)x(4x-y)-(2x+y)(2x-y)
(3)(2a2-3a+1)•(-2a)-(4a3-3a2+2a)÷2a.
题型:解答题难度:中档来源:不详

答案

(1)原式=6a3-a3-a
=5a3-a;

(2)原式=4x2-xy-4x2+y2
=y2-xy;

(3)原式=-4a3+6a2-2a-2a2+class="stub"3
2
a-1
=-4a3+4a2-class="stub"1
2
a-1.

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