PR!!! tolong bantu gua guys,no 9 pake cara penyelesaiannya jg

x^2+2xy+y^2 = 1
y^2= albino
x^2=normal
2xy=normal carrier
y^2=0,04
y=0,2

x+y=1
x=0,8

normal = x^2 . 10000 = 6400 orang
normal carrier = 2xy = 2. 0,8 . 0,2 . 10000
= 320 orang
jawaban : B