Question

Tentukan nilai p dan q jika diketahui: p+q : 8 & p× q : 15;

Answer 1

P + q = 8
p = 8 - q

p x q = 15
(8 - q) x (q) = 15
8q - q² = 15
0 = q² - 8q + 15
0 = (q - 5) (q - 3)
q = 5 atau q = 3

ingat p = 8 - q

jika q = 5
p = 8 - 5
p = 3

jika q = 3
p = 8 - 3
p = 5

Answer 2

P+q = 8
p.q = 15
p = 3
q = 5