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x²+(2p-3)x+2p-19=0
x1+x2=-b/a
-(2p-3)/1=0
-2p+3=0
-2p=-3
p=-3/-2
p=3/2
x²+(2(3/2)-3)x+2(3/2)-19=0
x²+(3-3)x+3-19=0
x²+0x-16=0
x²-16=0
(x+4)(x-4)=0
x=-4 dan x=4
Pilihan D.
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