tentukan HP penyelesaian x²-16=0

Bab Persamaan Kuadrat

x^2-16=0
(x+4)(x-4)
x+4=0 // x-4=0
x=-4 // x=4

X1=-4
X2=4

x^2 - 16 = 0
(x + 4) ( x - 4) = 0
x^2 - 4x + 4x - 16 = 0
x^2 - 16 = 0 ---> Terbukti

x + 4 = 0
x = -4

x - 4 =0
x = 4

Hp = { 4 , -4}