CONCEPT PREVIEW Fill in the blank to correctly complete each sentence. The polynomial 2x⁵ - x + 4 is a trinomial of degree _________.
Table of contents
- 0. Review of College Algebra4h 45m
- 1. Measuring Angles40m
- 2. Trigonometric Functions on Right Triangles2h 5m
- 3. Unit Circle1h 19m
- 4. Graphing Trigonometric Functions1h 19m
- 5. Inverse Trigonometric Functions and Basic Trigonometric Equations1h 41m
- 6. Trigonometric Identities and More Equations2h 34m
- 7. Non-Right Triangles1h 38m
- 8. Vectors2h 25m
- 9. Polar Equations2h 5m
- 10. Parametric Equations1h 6m
- 11. Graphing Complex Numbers1h 7m
0. Review of College Algebra
Solving Linear Equations
Problem R.3.11
Textbook Question
Simplify each expression. See Example 1. (-4x⁵) (4x²)
Verified step by step guidance1
Identify the properties of exponents and multiplication that apply. When multiplying terms with the same base, you multiply the coefficients and add the exponents of the variables.
Multiply the coefficients: here, multiply -4 and 4, which gives \(-4 \times 4\).
Apply the product rule for exponents to the variable part: since the bases are the same (both are \(x\)), add the exponents \$5\( and \)2$ using \(x^{5} \times x^{2} = x^{5+2}\).
Combine the results from the coefficient multiplication and the exponent addition to write the simplified expression as a product of the new coefficient and the variable with the summed exponent.
Write the final simplified expression in the form \(ax^{b}\), where \(a\) is the product of the coefficients and \(b\) is the sum of the exponents.
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Key Concepts
Here are the essential concepts you must grasp in order to answer the question correctly.
Product of Powers Property
When multiplying expressions with the same base, add the exponents. For example, x^a * x^b = x^(a+b). This property simplifies expressions involving powers of variables.
Recommended video:
Introduction to Dot Product
Multiplication of Coefficients
Multiply the numerical coefficients separately from the variables. For instance, in (-4x⁵)(4x²), multiply -4 and 4 to get -16 before combining the variable parts.
Recommended video:
Introduction to Quadratic Equations
Simplifying Algebraic Expressions
Combine like terms and apply arithmetic operations to rewrite expressions in simpler forms. This involves using exponent rules and basic multiplication to reduce complexity.
Recommended video:
Simplifying Trig Expressions
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