QuestionAugust 27, 2025

Question Simplify by rationalizing the denominator: (-2)/(3+sqrt (7)) Provide your answer below:

Question Simplify by rationalizing the denominator: (-2)/(3+sqrt (7)) Provide your answer below:
Question
Simplify by rationalizing the denominator: (-2)/(3+sqrt (7))
Provide your answer below:

Solution
4.3(309 votes)

Answer

-3 + \sqrt{7} Explanation 1. Multiply by the conjugate Multiply numerator and denominator by the conjugate of the denominator, 3 - \sqrt{7}. 2. Simplify the numerator (-2)(3 - \sqrt{7}) = -6 + 2\sqrt{7} 3. Simplify the denominator (3+\sqrt{7})(3-\sqrt{7}) = 3^2 - (\sqrt{7})^2 = 9 - 7 = 2 4. Combine results \frac{-6 + 2\sqrt{7}}{2} = -3 + \sqrt{7}

Explanation

1. Multiply by the conjugate<br /> Multiply numerator and denominator by the conjugate of the denominator, $3 - \sqrt{7}$.<br />2. Simplify the numerator<br /> $(-2)(3 - \sqrt{7}) = -6 + 2\sqrt{7}$<br />3. Simplify the denominator<br /> $(3+\sqrt{7})(3-\sqrt{7}) = 3^2 - (\sqrt{7})^2 = 9 - 7 = 2$<br />4. Combine results<br /> $\frac{-6 + 2\sqrt{7}}{2} = -3 + \sqrt{7}$
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