(a+b)^5 = a^5+pa^4b+qa^3b^2+sab^4+b^5 maka nilai dari 5p-2q+3r =

Bab Eksponensial
Matematika SMP Kelas IX

(a + b)⁵ = a⁵ + 5 . a⁴ b + 10a³ b² + 10a²b³ + 5ab⁴ + b⁵
(a + b)⁵ = a⁵ + pa⁴b + qa³b² + 10a²b³ + rab⁴ + b⁵

p = 5
q = 10
r = 5

5p - 2a + 3r
= 5 x 5 - 2 x 10 + 3 x 5
= 25 - 20 + 15
= 20