Question

A= (1995 * 1996 - 1997)/(1995 * 1994 -1993)

 

 

Answer 1

(1995x1996-1997)/(1995x1994-1993)

=(1995x1996)/(1995x1994-1993+1997)

=(1995x1996)/(1995x1994+4)

=(1995x(1995+1)/(1995x1994+4)

=(1995x1995+1995)/(1995x1994+4)

=(1995x1995+1995-4)/(1995x1994)

=(1995x1995+1991)/(1995x1994)

=...Tự giải tiếp nhé, phần sau giải thích hơi dài.

K mình nhé, cảm ơn các bạn.

Answer 2

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