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natali 33 [55]
3 years ago
5

What is the solution to ln (x2 - 16) = 0?

Mathematics
2 answers:
aleksley [76]3 years ago
8 0

Answer:

x=\pm \sqrt{17}

Step-by-step explanation:

Given : ln( {x}^{2} - 16) = 0

To Find: x

Solution:

ln( {x}^{2} - 16) = 0

Take antilogarithm of both sides to base e.  

{e}^{ ln( {x}^{2} - 16) } = {e}^{0}

{x}^{2} - 16 = 1

Now, Group like terms

{x}^{2} = 1 + 16

{x}^{2} = 17

x=\pm \sqrt{17}

Thus the solution to   ln( {x}^{2} - 16) = 0  is    x=\pm \sqrt{17}

bogdanovich [222]3 years ago
6 0
ANSWER

x = \pm \sqrt{17}
EXPLANATION

The given equation is

ln( {x}^{2} - 16) = 0

Take antilogarithm of both sides to base e.

{e}^{ ln( {x}^{2} - 16) } = {e}^{0}

This will simplify to

{x}^{2} - 16 = 1

Group like terms to obtain,

{x}^{2} = 1 + 16

{x}^{2} = 17

Take square root of both sides to get,

x = \pm \sqrt{17}
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