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3 years ago

9

If lnx + ln(x−3)= ln(4x), then x=

1 answer:

bazaltina [42]3 years ago

3 0

Answer:

x=7

Step-by-step explanation:

ln(x)+ln(x-3)=ln(4x)

x≥0,x≥3

combining x≥3

ln[x(x-3)]=ln(4x)

x(x-3)=4x

x²-3x-4x=0

x²-7x=0

x(x-7)=0

x=0(rejected),7

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