Jawapan

2016-06-01T09:17:13+08:00
X(x+1)=px-4
x^2 + x = px - 4
x^2 + x - px + 4 = 0
x^2 + ( 1 - p )x + 4 = 0
a = 1 , b = 1 - p , c = 4

b^2 - 4ac > 0
(1-p)^2 - 4(1)(4) > 0
(1-p)(1-p) - 4(4) > 0
1 - 2p + p^2 - 16 > 0
p^2 - 2p - 15 > 0
(x - 5)(x + 3) > 0

Range : - 3 < x < 5