计算:(1)(π-3)0-(12)-1+(23)2012×(-1.5)2013(2)(2xy2)3-(9xy2)-(-xy2)2(3)3(x-1)2-2(x-2)(x+2)(4)(a-2b+c)(a+

题目简介

计算:(1)(π-3)0-(12)-1+(23)2012×(-1.5)2013(2)(2xy2)3-(9xy2)-(-xy2)2(3)3(x-1)2-2(x-2)(x+2)(4)(a-2b+c)(a+

题目详情

计算:
(1)(π-3)0-(
1
2
-1+(
2
3
)2012×(-1.5)2013
       
(2)(2xy23-(9xy2)-(-xy22
(3)3(x-1)2-2(x-2)(x+2)
(4)(a-2b+c)(a+2b-c)
题型:解答题难度:中档来源:不详

答案

(1)原式=1-2-1.5=-2.5;  
(2)原式=8x3y6-9xy2.x2y4  
=8x3y6-9x3y6
=-x3y6;
(3)原式=3(x2-2x+1)-2(x2-4)
=x2-6x+11;
(4)原式=a2-(2b-c)2    
=a2-4b2+4bc-c2.

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