Question

Tolong bantu secepatnya please

Answer 1

Misal :
a = 1+p
b = 1-p

(1/(1+p))⁵.(1/(1-p))⁻⁷.((p-1)/(1+p))⁻⁶
= 1/a⁵.1/b⁻⁷.(-b)⁻⁶/a⁻⁶
= b⁷.a⁶/b⁶.a⁵
= a.b
= (1+p)(1-p)
= 1-p²