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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 94

Evaluate each expression. (5-3²)(√16-2³)

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First, evaluate the exponent in the expression: calculate \$3^2\( and \)2^3$ separately.
Next, substitute these values back into the expression to simplify inside the parentheses: \((5 - 3^2)\) becomes \((5 - \text{value})\) and \((\sqrt{16} - 2^3)\) becomes \((\sqrt{16} - \text{value})\).
Then, evaluate the square root \(\sqrt{16}\).
After that, perform the subtraction inside each set of parentheses to simplify both expressions.
Finally, multiply the two simplified results together to get the value of the entire expression.

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주요 개념

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

Order of Operations

The order of operations is a set of rules that dictate the sequence in which mathematical operations should be performed to ensure consistent results. It is commonly remembered by the acronym PEMDAS: Parentheses, Exponents, Multiplication and Division (left to right), Addition and Subtraction (left to right). Applying this order correctly is essential to evaluate expressions accurately.
추천 영상:
8:38
Performing Row Operations on Matrices

Exponents

Exponents represent repeated multiplication of a base number. For example, 3² means 3 multiplied by itself (3 × 3 = 9). Understanding how to calculate powers is crucial for simplifying expressions involving exponents before performing other operations.
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 instance, √16 equals 4 because 4 × 4 = 16. Recognizing and simplifying square roots is important when evaluating expressions that include radical signs.
추천 영상:
02:20
Imaginary Roots with the Square Root Property