计算:(1)(ab2c)2÷(ab3c2);(2)(﹣x﹣y)(x﹣y)+(x+y)2
题型:解答题难度:一般来源:期末题
计算: (1)(ab2c)2÷(ab3c2); (2)(﹣x﹣y)(x﹣y)+(x+y)2 |
答案
解:(1)(ab2c)2÷(ab3c2), =a2b4c2÷(ab3c2), =ab; (2)(﹣x﹣y)(x﹣y)+(x+y)2, =y2﹣x2+x2+2xy+y2, =2y2+2xy |
举一反三
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