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Multiple Choice
Rewrite the sum as a single logarithm. Further simplify if possible.
A
B
C
log10(x2+2x)
D
log10(x2+2)
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1
Recall the logarithm property that states the sum of two logarithms with the same base can be rewritten as the logarithm of the product of their arguments: \(\log_{b} A + \log_{b} B = \log_{b} (A \times B)\).
Apply this property to the given expression \(\log_{10} x + \log_{10} (x+2)\), rewriting it as \(\log_{10} \bigl(x \times (x+2)\bigr)\).
Multiply the expressions inside the logarithm: \(x \times (x+2) = x^2 + 2x\).
Rewrite the expression as a single logarithm: \(\log_{10} (x^2 + 2x)\).
Check if the expression inside the logarithm can be factored or simplified further. In this case, \(x^2 + 2x\) can be factored as \(x(x+2)\), but since the logarithm of a product is the sum of logarithms, the simplified single logarithm form is already achieved.