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3^2x.3^2+8.3^x-1=0
9p²+8p-1=0
(9p-1)+(p+1)=0
p=1/9 p=-1
p=3^x=1/9
x=-2
p=3^x=-1
x=0
berarti x antara -2 dan 0
terimakasih