Multiply or divide, as indicated. ac + ad + bc + bd/a2 - b2 * a3 - b3/2a2 + 2ab + 2b2

Ch. R - Review of Basic Concepts

Lial13th EditionCollege AlgebraISBN: 9780136881063Not the one you use?Change textbook

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Lial 13th Edition

Ch. R - Review of Basic Concepts

Problem 48a

Chapter 1, Problem 48a

Multiply or divide, as indicated. ac + ad + bc + bd/a² - b² * a³ - b³/2a² + 2ab + 2b²

Verified step by step guidance

First, rewrite the entire expression clearly as a multiplication and division problem: \[ \frac{ac + ad + bc + bd}{a^2 - b^2} \times \frac{a^3 - b^3}{2a^2 + 2ab + 2b^2} \].

Next, factor each polynomial where possible: - Factor the numerator of the first fraction by grouping: $ac + ad + bc + bd = (a + b)(c + d)$. - Factor the denominator of the first fraction as a difference of squares: $a^2 - b^2 = (a - b)(a + b)$.

Then, factor the numerator of the second fraction, which is a difference of cubes: $a^3 - b^3 = (a - b)(a^2 + ab + b^2)$.

Also, factor the denominator of the second fraction by factoring out the common factor 2: $2a^2 + 2ab + 2b^2 = 2(a^2 + ab + b^2)$.

Now, rewrite the entire expression with all factored forms and look for common factors in numerators and denominators to simplify the expression by canceling out those common factors.

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Key Concepts

Here are the essential concepts you must grasp in order to answer the question correctly.

Polynomial Multiplication and Distribution

Polynomial multiplication involves applying the distributive property to multiply each term in one polynomial by every term in the other. This process expands expressions like (ac + ad + bc + bd) by combining like terms and simplifying the result.

Factoring Polynomials

Factoring is rewriting a polynomial as a product of its factors. Recognizing patterns such as difference of squares (a^2 - b^2) or factoring out common terms helps simplify expressions and is essential before performing division or multiplication.

Simplifying Rational Expressions

Simplifying rational expressions involves factoring numerators and denominators, canceling common factors, and reducing the expression to its simplest form. This is crucial when dividing or multiplying complex fractions to avoid errors and obtain the correct simplified result.

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