Tolong jawab no 7 itu dong kak pliss

Jawaban:

(a^1/2-a^1/2)(a^-1/2+a^1/2)

a^(1/2+-1/2)+a^(1/2+1/2)-a^(1/2+-1/2)-a^(1/2+1/2)

a^0+a^1-a^0-a^1

1+a-1-a

0

di cek lagi, maaf kalau salah