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weqwewe [10]
3 years ago
15

Log4 x + log4(x-12)= 3

Mathematics
1 answer:
stellarik [79]3 years ago
6 0
             <span> log4(x+12)+log4x=3
log4(x(x+12))=3
log4(x^2+12x)=3
4^3=x^2+12x
64=x^2+12x
x^2+12x-64=0
(x+16)(x-4)=0
x=4 </span>
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