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x^2+x-px-2+2=0
x^2+(1-p)=0
menyinggung, maka deskriminan=0
D=0
b^2-4ac=0
(1-p)^2-4(1)(0)=0
(1-p)^2=0
(1-p)(1-p)=0
1-p=0
p=1
y = y
x²+x-2 = px-2
x²+x-px-2+2 = 0
x²+(1+p)x = 0
pers kuadrat tsb memiliki a = 1, b = 1+p dan c = 0
D = b²-4ac = 0
(1+p)²-4.1.0 = 0
(1+p)² = 0
1+p = 0
p = -1
semoga membantu ya.. :)