Question

2006 * 2005 - 1 / 2004 * 2006 + 2005

Answer 1

\(=\frac{2006x\left(2004+1\right)-1}{2004x2006+2005}=\frac{2006x2004+2005}{2004x2006+2005}=1\)

Answer 2

\(=\frac{2006\cdot2004+2006.1-1}{2004\cdot2006+2005}\)

\(=\frac{2006\cdot2004+2006-1}{2004\cdot2006+2005}\)

\(=\frac{2006\cdot2004+2005}{2004\cdot2006+2005}\)

\(\Rightarrow1\)

Answer 3

2006*2005 - 1/2004*2006 + 2005

= 2006*2004 + 2006 - 1/2004*2006 + 2005

= 2006*2004 + (2006 - 1)/2004*2006 + 2005

= 2006*2004 + 2005/2004*2006 + 2005

= 1