Evaluate each exponential expression: (-3)3 (-2)2

Ch. P - Fundamental Concepts of Algebra

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Blitzer 8th Edition

Ch. P - Fundamental Concepts of Algebra

문제 24

1장, 문제 24

Evaluate each exponential expression: (-3)³ (-2)²

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Identify the expression to evaluate: \((-3)^3 \times (-2)^2\).

Evaluate each exponential term separately. For \((-3)^3\), raise -3 to the power of 3, which means multiplying -3 by itself three times: \((-3) \times (-3) \times (-3)\).

For \((-2)^2\), raise -2 to the power of 2, which means multiplying -2 by itself two times: \((-2) \times (-2)\).

Calculate the results of each exponential expression individually, keeping track of the signs carefully.

Multiply the two results obtained from the previous step to get the final value of the expression.

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주요 개념

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Exponents and Powers

An exponent indicates how many times a base number is multiplied by itself. For example, a^n means multiplying 'a' by itself 'n' times. Understanding this helps in evaluating expressions like (-3)^3, which means (-3) × (-3) × (-3).

Negative Bases with Exponents

When a negative number is raised to a power, the sign of the result depends on whether the exponent is even or odd. An odd exponent results in a negative product, while an even exponent results in a positive product. For instance, (-3)^3 is negative, but (-2)^2 is positive.

Multiplication of Exponential Expressions

When multiplying exponential expressions with different bases, calculate each power separately first, then multiply the results. For example, evaluate (-3)^3 and (-2)^2 individually, then multiply the two values to get the final answer.