1)计算并观察下列各式:(x-1)(x+1)= ;(x-1)(x2+x+1)= ;(x-1)(x3+x2+x+1)= ;
1个回答
1,x2-1,x3-1,x4-1,
2,x5+x4+x3+x2+x1,
3,x7-1
4,
相关问题
计算并观察下列各式:(x-1)(x+1)=______;(x-1)(x2+x+1)=______;(x-1)(x3+x2
观察下列各式:(x-1)(x+1)=x 2 -1;(x-1)(x 2 +x+1)=x 3 -1;(x-1)(x 3 +x
观察下列各式:(x-1)(x+1)=x^2-1.(x-1)(x^2+x+1)=x^3-1,(x-1)(x^3+x^2+x
观察下列各式:(x-1)(x+1)=x^2-1(x-1)(x^2+x+1)=x^3-1(x-1)(x^3+x^2+x+1
观察下列各式:(x-1)(x+1)=x2-1,(x-1)(x2+x+1)=x3-1,(x-1)(x3+x2+x+1)=x
观察下列各式:(x-1)(x+1)=x2-1;(x-1)(x2+x+1)=x3-1;(x-1)(x3+x2+x+1)=x
观察下列各式:(x-1)(x+1)=x2-1,(x-1)(x2+x+1)=x3-1,(x-1)(x3+x2+x+1)=x
1.观察下列各式:(1)(x-1)(x+1)=x^2-1(2)(x-1)(x^2+x+1)=x^3-1(3)(x-1)(
观察下列各式:(x-1)(x+1)=x2-1(x-1)(x2+x+1)=x3-1(x-1)(x3+x2+x+1)=x4-
观察下列各式(x^2-1)÷(x-1)=x+1,(x^3-1)÷(x-1)=x^2+x+1.