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- Factor
- Solve for x
- Find the roots
- Solve by factoring
- Solve by completing the square
- Solve by quadratic formula (general formula)
- Find break even points
- Find the discriminant
- Exact Differential Equation
- Linear Differential Equation
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Subtract the values $9$ and $-4$
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$\ln\left(5\right)x=2$
Learn how to solve problems step by step online. Solve the logarithmic equation ln(9-4)x=2. Subtract the values 9 and -4. Divide both sides of the equation by \ln\left(5\right). section:Verify that the solutions obtained are valid in the initial equation. The valid solutions to the logarithmic equation are the ones that, when replaced in the original equation, don't result in any logarithm of negative numbers or zero, since in those cases the logarithm does not exist.