Question

Solve eqation log (x+3)+log(x-3)=log 16.

Answer 1

Answer:

x = 5

Explanation:

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We know the logarithmic law:

i) log m + log n = log mn

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Here ,

log(x+3)+log(x-3) = log 16

=> log[(x+3)(x-3)] = log 16

=> log (x²-3²) = log 16

=> x²-3² = 16

=> x² - 9 = 16

=> x² = 16 +9

=> x² = 25

=> x = √25

=> x = 5

•••••

Answer 2

Hey.

Refer the below attachment !

Thanks !