Simplify each expression. Assume all variables represent nonzero real numbers. See Examples 2 and 3.(-6x²)³
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Recognize that the expression is a power of a product: \((-6x^{2})^{3}\). According to the exponent rules, \((ab)^{n} = a^{n} b^{n}\), so you can apply the exponent to both \(-6\) and \(x^{2}\) separately.
Apply the exponent to the constant term: \((-6)^{3}\). This means multiplying \(-6\) by itself three times.
Apply the exponent to the variable term: \((x^{2})^{3}\). Use the power of a power rule, which states \((x^{m})^{n} = x^{m \times n}\).
Combine the results from the previous two steps to write the expression as a product of the simplified constant and the simplified variable term.
Write the final simplified expression by multiplying the constants and expressing the variable with the new exponent.
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Key Concepts
Here are the essential concepts you must grasp in order to answer the question correctly.
Exponentiation of a Product
When raising a product to a power, each factor inside the parentheses is raised to that power separately. For example, (ab)^n = a^n * b^n. This rule allows us to simplify expressions like (-6x²)³ by applying the exponent to both -6 and x².
The power of a power rule states that (a^m)^n = a^(m*n). This means when an exponent is raised to another exponent, you multiply the exponents. In the expression (-6x²)³, the x² raised to the 3rd power becomes x^(2*3) = x^6.
Powers Of Complex Numbers In Polar Form (DeMoivre's Theorem) Example 1
Handling Negative Bases with Exponents
When raising a negative number to an exponent, the sign depends on whether the exponent is even or odd. An odd exponent preserves the negative sign, while an even exponent results in a positive value. For (-6)³, since 3 is odd, the result is negative.