Jawabanmu

2014-02-03T21:11:00+07:00
D=0
*.b^2-4ac=0
144-36p=0
36p=144
p=4
*.(p+8)^2-4p.9=0
p^2+16p+64-36p=0
p^2-20p+64=0
(p-16)(p-4)=0
p=16,p=4
*.m^2-64=0
m^2=64
m=8
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