jazminebullock22 jazminebullock22

09-04-2020
Mathematics

contestada

If lnx + ln(x−3)= ln(4x), then x=

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surjithayer10 surjithayer10

09-04-2020

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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