/*! This file is auto-generated */ .wp-block-button__link{color:#fff;background-color:#32373c;border-radius:9999px;box-shadow:none;text-decoration:none;padding:calc(.667em + 2px) calc(1.333em + 2px);font-size:1.125em}.wp-block-file__button{background:#32373c;color:#fff;text-decoration:none} Problem 7 Simplify the expression. $$\sq... [FREE SOLUTION] | 91Ó°ÊÓ

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Simplify the expression. $$\sqrt[3]{4\left(\frac{1}{4} x^{3}\right)}$$

Short Answer

Expert verified
The simplified form of \( \sqrt[3]{4\left(\frac{1}{4} x^{3}\right)} \) is 0.7937x.

Step by step solution

01

Break Down the Expression

We can first break this expression into two parts based on the multiplication: \(\sqrt[3]{4} * \sqrt[3]{\left(\frac{1}{4} x^{3}\right)}\).
02

Simplify the Cubic Roots

Now, we compute the cubic root of 4, which is 1.5874 (considering up to four decimal places), and the cubic root of \(\frac{1}{4} x^{3}\) is \( \frac{1}{2} \cdot x\). The simplification leads to \(1.5874 * \frac{1}{2} \cdot x\).
03

Multiplication

We then perform the multiplication which gives \( 1.5874 \cdot \frac{1}{2} \cdot x = 0.7937x\).

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Key Concepts

These are the key concepts you need to understand to accurately answer the question.

Simplifying Expressions
Simplifying expressions means making them easier to understand or work with by reducing them to their simplest form. It involves breaking down complex terms into basic ones so that the expression can be more easily managed or calculated. This process often involves identifying common factors, applying mathematical operations, and sometimes factoring or expanding expressions.

Consider an expression with multiple operations or terms combined together. The goal is to combine like terms if possible, apply arithmetic rules, or use known values for variables to simplify the expression to one or a minimal number of terms. For example, in our original exercise, we simplify the expression \(\sqrt[3]{4\left(\frac{1}{4} x^{3}\right)}\).

Simplifying allows us to better understand the behavior of the expression under various conditions, make it computationally feasible, or prepare it for further algebraic manipulations. It often makes it easier to substitute values into an expression or to evaluate it quickly.
Cubic Root Calculation
Cubic root calculation involves finding a number which, when multiplied by itself twice (raised to the power of three), gives the original number. It is the inverse operation of cubing a number and is represented with the radical symbol with an index of three, like \( \sqrt[3]{} \).

When calculating cubic roots:
  • Identify the number or expression you're extracting the cubic root from, called the radicand.
  • Determine if the radicand is a perfect cube, which means it can be expressed as a smaller number raised to the power of three.
  • If it's not a perfect cube, compute it using numerical methods or approximations.
  • Use known values or roots to help simplify complex expressions.
Cubic roots can also be applied to algebraic expressions. For instance, the cubic root of the expression \( \frac{1}{4} x^{3} \) simplifies by isolating \( x^{3} \) as \( x \), and dealing with \( \frac{1}{4} \) separately, giving \( \frac{1}{2} \cdot x \).

Understanding cubic roots is foundational in solving polynomial equations, simplifying radical expressions, and modeling real-world phenomena involving cubic relationships.
Algebraic Simplification
Algebraic simplification involves reducing expressions involving variables and numbers to their simplest form, often by factoring, combining like terms, or applying properties of operations. This makes equations easier to solve and expressions easier to evaluate.

To simplify an algebraic expression:
  • Identify terms and factors that can be combined or cancelled.
  • Use distribution to expand or factor common expressions.
  • Apply algebraic identities, such as \(a^3 - b^3 = (a-b)(a^2 + ab + b^2)\), to simplify complex expressions.
  • Simplify any fractional expressions if possible, by canceling common numerators and denominators.
For example, in our exercise, simplifying \(\sqrt[3]{4} \cdot \sqrt[3]{\left(\frac{1}{4} x^{3}\right)}\) involves separately simplifying each cubic root and multiplying the results to achieve the simplest form, '\( 0.7937x \)'.

Learning algebraic simplification enables tackling more complex algebraic operations and makes understanding underlying mathematical concepts easier. It is an essential skill as it helps in decomposing problems into less complicated tasks, leading to more efficient problem-solving.

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Most popular questions from this chapter

If the graph of a function \(f\) is symmetric with respect to the \(y\) -axis, can \(f\) be one-to-one? Explain.

Solve the logarithmic equation and eliminate any extraneous solutions. If there are no solutions, so state. $$\log (3 x+1)+\log (x+1)=1$$

Consider the two functions \(f(x)=2 x\) and \(g(x)=2^{x}.\) (a) Make a table of values for \(f(x)\) and \(g(x),\) with \(x\) ranging from -1 to 4 in steps of 0.5. (b) Find the interval(s) on which \(2 x<2^{x}.\) (c) Find the interval(s) on which \(2 x>2^{x}.\) (d) Using your table from part (a) as an aid, state what happens to the value of \(f(x)\) if \(x\) is increased by 1 unit. (e) Using your table from part (a) as an aid, state what happens to the value of \(g(x)\) if \(x\) is increased by 1 unit. (f) Using your answers from parts (c) and (d) as an aid, explain why the value of \(g(x)\) is increasing much faster than the value of \(f(x).\)

This set of exercises will draw on the ideas presented in this section and your general math background. Do the equations \(\ln x^{2}=1\) and \(2 \ln x=1\) have the same solutions? Explain.

The value of a 2003 Toyota Corolla is given by the function $$v(t)=14,000(0.93)^{t}$$ where \(t\) is the number of years since its purchase and \(v(t)\) is its value in dollars. (Source: Kelley Blue Book) (a) What was the Corolla's initial purchase price? (b) What percent of its value does the Toyota Corolla lose each year? (c) How long will it take for the value of the Toyota Corolla to reach \(\$ 12,000 \)

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