Question 1060994
91.a) log(25) 5 =
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5 = 25^x
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x = 1/2, which is square root
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91.b) log(25) x + log(25) (x^2 - 1) - log(25) (x+1) - 1/2
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use the log rule - logb(x ∙ y) = logb(x) + logb(y)
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log(25) (x^3 - x) - log(25) (x+1) = 1/2
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use the log rule - logb(x / y) = logb(x) - logb(y)
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log(25) (( x^3 - x) / (x + 1)) = 1/2
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log(25) (x * (x - 1) * (x + 1)) / (x + 1) = 1/2
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log(25) (x^2 - x) = 1/2
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log(25) (x^2 - x) = log(25) 5
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log(25) 5
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