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Ch. R - Review of Basic Concepts
Lial - College Algebra 13th Edition
Lial13th EditionCollege AlgebraISBN: 9780136881063당신이 사용하는 게 아니라요?교과서 변경
1장, 문제 72

Simplify each radical. Assume all variables represent positive real numbers. √192

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Start by expressing the number inside the radical, 192, as a product of its prime factors. This helps identify perfect squares. For 192, find its prime factorization.
Rewrite the square root using the prime factorization: \(\sqrt{192} = \sqrt{2^6 \times 3}\), since 192 can be factored into \$2^6$ and \(3\).
Apply the property of square roots that \(\sqrt{a \times b} = \sqrt{a} \times \sqrt{b}\). So, separate the radical into \(\sqrt{2^6} \times \sqrt{3}\).
Simplify \(\sqrt{2^6}\) by recognizing that \(\sqrt{2^6} = 2^{6/2} = 2^3\), because the square root of a power is the power divided by 2.
Combine the simplified parts to write the expression as \(2^3 \times \sqrt{3}\), or equivalently \(8\sqrt{3}\), which is the simplified form of \(\sqrt{192}\).

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주요 개념

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

Simplifying Radicals

Simplifying radicals involves expressing a square root in its simplest form by factoring the radicand into perfect squares and other factors. For example, √192 can be broken down into √(64 × 3), where 64 is a perfect square, allowing simplification to 8√3.
추천 영상:
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Adding & Subtracting Unlike Radicals by Simplifying

Perfect Squares

Perfect squares are numbers that are squares of integers, such as 1, 4, 9, 16, 25, and so on. Recognizing perfect squares within a radicand helps simplify radicals by extracting their square roots as whole numbers.
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Solving Quadratic Equations by Completing the Square

Properties of Square Roots

The property √(a × b) = √a × √b allows the separation of a square root of a product into the product of square roots. This property is essential for breaking down complex radicals into simpler parts for easier simplification.
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Imaginary Roots with the Square Root Property