(1)计算:x2-1x-1×(1+1x+1) (2)解方程:x-1x-2...
(1)计算:x2-1x-1×(1+1x+1)(2)解方程:x-1x-2+12-x=3(3)化简:(-2m2n-2)2•(3m-1n3)-3(4)计算:(12)...
(1)计算:x2-1x-1×(1+1x+1) (2)解方程:x-1x-2+12-x=3 (3)化简:(-2m2n-2)2•(3m-1n3)-3 (4)计算:(12)-2-23×0.125+20040+|-1|.
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