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2. \( \frac{x}{x+2}=\frac{2}{x-1} \)

Ask by Collins Munoz. in Kazakhstan
Jan 17,2025

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Решение уравнения \( \frac{x}{x+2} = \frac{2}{x-1} \) дает два корня: \( x = 4 \) и \( x = -1 \).

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Mind Expander

To solve the equation, start by cross-multiplying to eliminate the fractions: \( x(x - 1) = 2(x + 2) \). This simplifies to \( x^2 - x = 2x + 4 \). By rearranging the terms, we get \( x^2 - 3x - 4 = 0 \). Now, you can factor this quadratic equation into \( (x - 4)(x + 1) = 0 \). The solutions are \( x = 4 \) and \( x = -1 \). Before concluding, it’s wise to check for extraneous solutions by substituting back into the original equation. The values need to be checked against the denominators to ensure they do not lead to division by zero, which can happen if \( x = -2 \) or \( x = 1 \) in this case. Both solutions \( x = 4 \) and \( x = -1 \) are valid since they do not create undefined conditions. Happy solving!

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