Question

(1)10^7除以(10^3除以10^2)

Answer 1

1 10^6

2 -(x-y)^6

3 4*2^(2n-1)

4 0

5 y^-3

6 x^2+x^5+x^7

7 m^3+m^5

8 a^8

9 貌似少括号了...

10 (x+y)^2-4

11 x/2y+y/2x-xy/2+1

12 a^4+2a^3-a^2+4a-8