(a+b)^n=a^n+n(n-1)/2*a^(n-1)*b+……+n(n-1)/2*a*b^(n-1)+b^n
2006^2008=(2007-1)^2008=2007^2008+……+(-1)^2008
除以2007 余1
猜你喜欢
- 11.如果a是一元二次方程x2–3x+m=0的一个根,-a是一元二次方程x2+3x–m=0的一个根,那么a的值等于( )
- 2谜语:People usually have a long holiday.They meet friends and relatives.It's our mother's birthday.But It's not Mother's D
- 3如果单项式-3x^(4a-b)y^2与3分之1x^3y(a+b)的和式单项式,那么这两个单项式的积是( )
- 4马克思主义的含义是什么?
- 5一块棱长是六厘米的正方体橡皮泥,捏成横折面是30平方厘米的长方体.捏成的长方体(用方程解答)
- 6氧化铝加入过量的氢氧化钠在加入二氧化碳的反应式是什莫?
- 7Amy likes playing computer games.(改为一般疑问句,做否定回答)
- 8adlts only - take 1 capsule 3 times daily or as directed by your
- 9lim(n→∞) (n+1)(n+2) (n+3)/5n3次方+n 的极限?
- 10How long does the camp last?