计算:[4(a-2)2+12(a+2)(a-2)-8(a-1)2(a-2)]÷4(a-2)=______.
题型:填空题难度:一般来源:不详
计算:[4(a-2)2+12(a+2)(a-2)-8(a-1)2(a-2)]÷4(a-2)=______. |
答案
[4(a-2)2+12(a+2)(a-2)-8(a-1)2(a-2)]÷4(a-2), =[4(a-2)2+12(a+2)(a-2)-8(a-1)2(a-2)]÷4(a-2), =4(a-2)[(a-2)+3(a+2)-2(a-1)2]÷4(a-2), =(a-2)+3(a+2)-2(a-1)2, =a-2+3a+6-2+4a-2a2, =-2a2+8a+2. |
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