Question

\(\frac{1999x2001-1}{1998+1999x2000}\)ai nhanh đúng mình k

Answer 1

\(=\frac{3999999-1}{1998+3998000}=\frac{3999998}{3999998}=1\)

Answer 2

\(\frac{1999x2001-1}{1998+1999x2000}\)

\(=\frac{1999x2000+1999-1}{1998+1999x2000}\)

\(=\frac{1999x2000+1998}{1998+1999x2000}\)

\(=1.\)

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Answer 3

bằng 1 nhé