Question

几道七年级数学题,帮忙解决,好的追加100

Answer 1

1.

a. [(-1)^(n+1)] * n^2

[(-1)^n] * 2 * n^2

b. -100^2*2*100^2=2*10^4

2.

a. 2^4=16

b. 2^6=64

c. 2^(2*n)