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Find the roots of the equation using the Quadratic Formula
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$2^x=5$
Learn how to solve equations problems step by step online. Find the roots of 2^x=5. Find the roots of the equation using the Quadratic Formula. We can take out the unknown from the exponent by applying logarithms in base 10 to both sides of the equation. Use the following rule for logarithms: \log_b(b^k)=k. Evaluating the logarithm of base 2 of 5.