log4x + log4(x - 6) = 2

Question

log4x + log4(x - 6) = 2

Comments

4 внизу ??

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да

Answer 1

Log4x+Log4(x-6)=log4(16)
x*(x-6)=16
x^2-6x-16=0
x1+x2=6
x1*x2=-16
x1=8
x2=-2