第1个回答 2009-04-01
1. 因187=88-1,87^88=(88-1)^88=C88(0)(88)^88+C88(1))(2*88)^87(-1)^1+.......+C88(88)(88)^0(-1)^88
187^88被88除余1, 87^88+7被88除,所得的余数是1+7,即8
2. P=1+5(X+1)+10(X+1)^2 +10(X+1)^3 +5(X+1)^4 +(X+1)^5,P=(X+2)^5
3. (X-1)(X-2)(X-3)(X-4)(X-5)=X(X-2)(X-3)(X-4)(X-5)-(X-2)(X-3)(X-4)(X-5)=X^2(X-3)(X-4)(X-5)-2X(X-3)(X-4)(X-5)-(X-2)(X-3)(X-4)(X-5),含X^4的项的系数的是(-3-4-5)-2-1=-15