Perform the indicated operations. Assume all variables represent positive real numbers. 4√3(√7 - 2√11)
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Distribute the term \(4\sqrt{3}\) to each term inside the parentheses.
Multiply \(4\sqrt{3}\) by \(\sqrt{7}\) to get \(4\sqrt{3} \times \sqrt{7} = 4\sqrt{21}\).
Multiply \(4\sqrt{3}\) by \(-2\sqrt{11}\) to get \(-8\sqrt{33}\).
Combine the results from the distribution: \(4\sqrt{21} - 8\sqrt{33}\).
The expression simplifies to \(4\sqrt{21} - 8\sqrt{33}\).
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Key Concepts
Here are the essential concepts you must grasp in order to answer the question correctly.
Radical Expressions
Radical expressions involve roots, such as square roots or cube roots. In this context, the expression includes square roots of numbers, which can be simplified or manipulated according to algebraic rules. Understanding how to simplify radical expressions is crucial for performing operations like addition, subtraction, or multiplication.
The distributive property states that a(b + c) = ab + ac, allowing us to multiply a single term by each term within a parenthesis. In the given expression, applying the distributive property is essential to correctly multiply 4√3 by each term in the expression (√7 - 2√11), ensuring all parts are accounted for in the final result.
Multiply Polynomials Using the Distributive Property
Combining Like Terms
Combining like terms involves adding or subtracting terms that have the same variable and exponent. In the context of radical expressions, this means simplifying the results of operations to group terms with the same radical part. This step is important for presenting the final answer in its simplest form, making it easier to interpret.