milipaola
milipaola milipaola
  • 14-03-2018
  • Mathematics
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Select all of the potential solution(s) of the equation 2log5x=log54.

Select all of the potential solutions of the equation 2log5xlog54 class=

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alliesempire alliesempire
  • 18-03-2018
x= -2 and x= 2 are the answers
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agaue agaue
  • 26-08-2018

Given :[tex] 2log_{5} x^{2} =log_{5} 2^{2} [/tex]

To solve for x we use the logarithm rule for powers.

The log rule for powers states:

[tex] mlog_{a}n =log_{a} n^{m} [/tex]

We apply this rule to the left side of the equation.

[tex] log_{5} x^{2} =log_{5} 4

Both sides have log with same base so it can be eliminated.

Eliminating log from both sides we have:

[tex] x^{2} =4

To solve for x we take root of both sides

x=2,-2.

Answer Link

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