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Use properties of logarithms to expand the logarithmic expression as much as possible. Where possible, evaluate logarithmic expressions without using a calculator.
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Q88: The roof of a building is
Q93: <span class="ql-formula" data-value="25 x^{2}=9 y^{2}+225"><span class="katex"><span class="katex-mathml"><math
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Q137: Find <span class="ql-formula" data-value="\left( \frac
Q139: <span class="ql-formula" data-value="\begin{array} { l } \frac
Q178: <span class="ql-formula" data-value="f ( x ) =