Find each product. (2z-1)(-z2+3z-4)

Ch. R - Review of Basic Concepts

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Lial 13th Edition

Ch. R - Review of Basic Concepts

문제 35

1장, 문제 35

Find each product. (2z-1)(-z²+3z-4)

검증된 단계별 안내

Distribute each term in the first polynomial \((2z - 1)\) to each term in the second polynomial \((-z^2 + 3z - 4)\).

Multiply \(2z\) by each term in \((-z^2 + 3z - 4)\): \(2z \cdot (-z^2)\), \(2z \cdot 3z\), and \(2z \cdot (-4)\).

Multiply \(-1\) by each term in \((-z^2 + 3z - 4)\): \(-1 \cdot (-z^2)\), \(-1 \cdot 3z\), and \(-1 \cdot (-4)\).

Combine all the products from the previous steps: \(2z \cdot (-z^2) + 2z \cdot 3z + 2z \cdot (-4) + (-1) \cdot (-z^2) + (-1) \cdot 3z + (-1) \cdot (-4)\).

Simplify the expression by combining like terms to get the final polynomial expression.

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주요 개념

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Polynomial Multiplication

Polynomial multiplication involves multiplying each term in one polynomial by every term in the other polynomial. This process requires applying the distributive property to combine like terms and simplify the expression.

Distributive Property

The distributive property states that a(b + c) = ab + ac. It allows you to multiply a single term by each term inside a parenthesis, which is essential when expanding products of polynomials.

Combining Like Terms

After multiplying polynomials, you combine like terms—terms with the same variable raised to the same power—to simplify the expression into its standard form.