Question

Hasil (a+b)5 = a5 + pa4b + qa3b2 + ra2b3 + sab4 + b5
tentukan nilai 5p - 4q

pliseeee.................... tolong jawab ini penting !!!!!!!!!!

Answer 1

(a+b)5 = a5 + 5a4b + 10a3b2 + 10a2b3 + 5ab4 + a5
sekarang cocokkan
(a+b)5 = a5 + pa4b + qa3b2 + ra2b3 + sab4 + b5

jadi, p = 5
q = 10

5p = 5 x 5 = 25
4q = 10 x 4 = 40

jadi, kalau
5p - 4q = 25 - 40 = -15

semoga bermanfaat