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Mathematics

Given that log10y + 2log10x = 2, express y in terms of x.

Logarithms

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Answer

Given,

log10y + 2log10x = 2

⇒ log10y + log10x2 = 2

⇒ log10yx2 = 2log1010

⇒ log10yx2 = log10102

⇒ log10yx2 = log10100

⇒ yx2 = 100

⇒ y = 100x2.\dfrac{100}{x^2}.

Hence, y = 100x2\dfrac{100}{x^2}.

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