Find each product or quotient. Simplify the answers. √-30 / √-10

검증된 단계별 안내

Recognize that the problem involves division of square roots with negative radicands: \(\frac{\sqrt{-30}}{\sqrt{-10}}\).

Rewrite each square root of a negative number using the imaginary unit \(i\), where \(i = \sqrt{-1}\). So, \(\sqrt{-30} = \sqrt{30} \cdot i\) and \(\sqrt{-10} = \sqrt{10} \cdot i\).

Substitute these expressions back into the quotient: \(\frac{\sqrt{30} \cdot i}{\sqrt{10} \cdot i}\).

Cancel the common factor \(i\) in numerator and denominator: \(\frac{\sqrt{30}}{\sqrt{10}}\).

Simplify the quotient of square roots by writing it as a single square root: \(\sqrt{\frac{30}{10}}\), then simplify the fraction inside the root.

비슷한 문제에 대한 검증된 영상 답변:

이 영상 해법은 위 문제에 도움이 된다고 튜터들이 추천한 것입니다.

영상 길이:

주요 개념

질문에 올바르게 답하기 위해 반드시 이해해야 하는 핵심 개념들은 다음과 같습니다.

Simplifying Square Roots of Negative Numbers

Square roots of negative numbers involve imaginary numbers, since the square root of a negative value is not real. This is expressed using the imaginary unit 'i', where i² = -1. For example, √-30 can be rewritten as √30 × i.

Properties of Radicals in Division

When dividing square roots, the quotient rule applies: √a / √b = √(a/b), provided a and b are non-negative. This property helps simplify expressions by combining radicals under a single root before further simplification.

Simplifying Radical Expressions

Simplifying radicals involves factoring the number inside the root to extract perfect squares and reduce the expression. After applying imaginary units and division properties, further simplification may involve reducing fractions inside the root or rationalizing denominators.