计算:(1)a2-a-a3=______; (2)-a4÷(-a)=______;(3)(-4a2b3)2=______; (4)(x-1)(-x-1)=___
题型:填空题难度:一般来源:不详
计算: (1)a2-a-a3=______; (2)-a4÷(-a)=______; (3)(-4a2b3)2=______; (4)(x-1)(-x-1)=______. |
答案
(1)原式=a2+1+3=a6; (2)原式=a4-1=a3; (3)原式=16(a2)2(b3)2=16a4b6; (4)原式=(-1)2-x2=1-x2. 故答案为:(1)a6;(2)a3;(3)16a4b6;(4)1-x2 |
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