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Ch. P - Fundamental Concepts of Algebra
Blitzer - College Algebra 8th Edition
Blitzer8th EditionCollege AlgebraISBN: 9780136970514당신이 사용하는 게 아니라요?교과서 변경
1장, 문제 63

Evaluate each expression 161/2.

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1
Recognize that the expression \(16^{1/2}\) represents the square root of 16 because an exponent of \(1/2\) means the square root.
Rewrite the expression using the square root notation: \(16^{1/2} = \sqrt{16}\).
Recall that the square root of a number is a value that, when multiplied by itself, gives the original number.
Identify the number that when squared equals 16. Since \(4 \times 4 = 16\), the square root of 16 is 4.
Therefore, \(16^{1/2}\) simplifies to 4.

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주요 개념

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

Exponents and Powers

Exponents indicate how many times a base number is multiplied by itself. For example, 16^2 means 16 multiplied by itself twice. Understanding exponents helps in simplifying expressions involving powers.
추천 영상:
04:10
Powers of i

Fractional Exponents

A fractional exponent like 16^(1/2) represents a root; specifically, the denominator of the fraction is the root's degree. Here, 1/2 means the square root, so 16^(1/2) equals the square root of 16.
추천 영상:
04:06
Rational Exponents

Square Roots

The square root of a number is a value that, when multiplied by itself, gives the original number. For example, the square root of 16 is 4 because 4 × 4 = 16. This concept is essential for evaluating expressions with fractional exponents.
추천 영상:
02:20
Imaginary Roots with the Square Root Property