Evaluate each expression for p = -4, q = 8, and r = -10. See Example 6. -p² - 7q + r
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.2.105
Textbook Question
Identify the property illustrated in each statement. Assume all variables represent real numbers. 6 • 12 + 6 • 15 = 6(12 + 15)
Verified step by step guidance1
Observe the given expression: \(6 \cdot 12 + 6 \cdot 15 = 6(12 + 15)\).
Notice that the number 6 is multiplied by both 12 and 15 separately on the left side.
On the right side, 6 is factored out and multiplied by the sum of 12 and 15 inside the parentheses.
This illustrates the Distributive Property, which states that for any real numbers \(a\), \(b\), and \(c\): \(a \cdot b + a \cdot c = a(b + c)\).
Therefore, the property shown is the Distributive Property of multiplication over addition.
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Key Concepts
Here are the essential concepts you must grasp in order to answer the question correctly.
Distributive Property
The distributive property states that multiplying a number by a sum is the same as multiplying the number by each addend separately and then adding the products. In algebraic form, a(b + c) = ab + ac. This property is fundamental for simplifying expressions and solving equations.
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Imaginary Roots with the Square Root Property
Multiplication over Addition
This concept highlights how multiplication interacts with addition, allowing the factor outside the parentheses to be distributed to each term inside. It ensures that operations are performed correctly and consistently, preserving equality in expressions.
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Coterminal Angles on the Unit Circle
Algebraic Expression Simplification
Simplifying algebraic expressions involves applying properties like distributive, associative, and commutative to rewrite expressions in simpler or more useful forms. Recognizing these properties helps in manipulating and solving equations efficiently.
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