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(log x)^2 = logx^2 How would you solve this math question?

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(log x)^2 =  logx^2 How would you solve this math question?
asked Dec 11, 2014 in ALGEBRA 1 by anonymous

1 Answer

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The logarithmic equation (logx)2 = logx2

(logx)(logx) = logx2

{ Apply the power property : log am = m log a}

(logx)(logx) = 2logx

(logx)(logx) - 2logx = 0

logx[ logx - 2] = 0

Apply zero product property.

logx = 0 and logx - 2 = 0

Solve logx = 0

x = 100

x = 1

Now solve  logx - 2 = 0

logx = 2

x = 102

x = 100

Solutions are x = 1 and x = 100.

answered Dec 11, 2014 by david Expert

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