Jawapan

2016-06-11T13:38:14+08:00
4x^2 + mx + n = 0
x^2 + m/4x + n/4 = 0

sor = - 3 
a + b = - m/4
- m/4 = - 3
- m = - 12
m = 12

por = 1/2
(a)(b) = n/4
n/4 = 1/2
2n = 4
n = 2