(1²/2002-2²/2002+.13²/2002-14²/2002+15
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(1²/2002-2²/2002+.13²/2002-14²/2002+15²/2002
(1²/2002-2²/2002+.13²/2002-14²/2002+15²/2002
=(1²-2²+3²-4²+.+13²-14²+15²)/2002
=(1+(3-2)(3+2)+(5-4)(5+4)+.+(15-14)(15+14))/2002
=(1+2+3+...+14+15)/2002
=【(1+15)×15÷2】/2002
=120/2002
=60/1001
=(1²-2²+3²-4²+.+13²-14²+15²)/2002
=(1+(3-2)(3+2)+(5-4)(5+4)+.+(15-14)(15+14))/2002
=(1+2+3+...+14+15)/2002
=【(1+15)×15÷2】/2002
=120/2002
=60/1001
(1²/2002-2²/2002+.13²/2002-14²/2002+15
简便计算(2002^3-2*2002²-2000)/(2002^3+2002²-2003)
2002²-2001²+2000²-1999²+.+2²-1²
计算2002²-2002乘2003=?
1 2002²-2001×2003 2 2001²-2010×2012
求2003²-2002²+2001²-2000²+……+3²-2
2002²-2001×2003=
1²+2²/1×2+2²+3²/2×3+……+2001²+2002
(1)2004²-2003²+2002²-2001²+2000²-19
2003²-2002²+2001²-2000²+……+3²-2
2001²-2000乘以2002的结果是
已知M=根号2001× 2002×2003×2004+1-2002²,求M的值