Find each root.x66\sqrt[6]{$$x^6$$} 6x6

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 40

Chapter 1, Problem 40

Find each root. $$\sqrt$[6]{x^6}$

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Recognize that the expression ⁶√x^6 represents the sixth root of x raised to the sixth power, which can be written as $\sqrt[6]{x^6}$.

Recall the property of radicals and exponents: $\sqrt[n]{a^m} = a^{\frac{m}{n}}$. Applying this, rewrite the expression as $x^{\frac{6}{6}}$.

Simplify the exponent $\frac{6}{6}$ to 1, so the expression becomes $x^1$, which is simply $x$.

Consider the domain of the original expression. Since the sixth root is an even root, the radicand $x^6$ is always non-negative for all real $x$, so the expression is defined for all real numbers.

Therefore, the root of the expression $\sqrt[6]{x^6}$ simplifies to $|x|$, the absolute value of $x$, because even roots return the principal (non-negative) root.

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Key Concepts

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

Nth Roots and Radicals

The nth root of a number is a value that, when raised to the power n, gives the original number. For example, the 6th root of x^6 means finding a number which, when raised to the 6th power, equals x^6. Understanding how to simplify and interpret nth roots is essential for solving such expressions.

Properties of Exponents

Exponents represent repeated multiplication, and their properties allow simplification of expressions. Specifically, (x^a)^(b) = x^(a*b). This property helps simplify the expression ⁶√x^6 by rewriting the root as a fractional exponent, enabling easier calculation of the root.

Absolute Value in Even Roots

When taking even roots (like square roots or 6th roots) of even powers, the result is the absolute value of the base because even powers eliminate sign information. For example, ⁶√x^6 equals |x|, ensuring the root is non-negative regardless of x's sign.

Find each root.x66\(\sqrt\)[6]{x^6}6x6

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Key Concepts

Nth Roots and Radicals

Properties of Exponents

Absolute Value in Even Roots

Find each root. $\(\sqrt\)[6]{x^6}$