Domanda del libro di testo
Begin by graphing the cube root function, f(x) = ∛x. Then use transformations of this graph to graph the given function. ∛(-x+2)
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Ch. 2 - Functions and Graphs
Blitzer8th EditionCollege AlgebraISBN: 9780136970514
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TOC.tableOfContents
- Ch. P - Fundamental Concepts of Algebra311
- Ch. 1 - Equations and Inequalities398
- Ch. 2 - Functions and Graphs407
- Ch. 3 - Polynomial and Rational Functions306
- Ch. 4 - Exponential and Logarithmic Functions247
- Ch. 5 - Systems of Equations and Inequalities173
- Ch. 6 - Matrices and Determinants143
- Ch. 7 - Conic Sections124
- Ch. 8 - Sequences, Induction, and Probability251
Capitolo 3, Problema 120
Solve and check: (x-1)/5 - (x+3)/2 = 1- x/4
Guida verificata passo dopo passo1
Rewrite the equation to eliminate the fractions by finding the least common denominator (LCD) of all the denominators. The denominators are 5, 2, and 4, so the LCD is 20. Multiply every term in the equation by 20 to clear the fractions.
Distribute the 20 to each term in the equation. For example, multiplying \((x-1)/5\) by 20 gives \(4(x-1)\), multiplying \((x+3)/2\) by 20 gives \(10(x+3)\), and multiplying \(x/4\) by 20 gives \(5x\). Rewrite the equation without fractions.
Simplify the resulting equation by distributing and combining like terms. Expand \(4(x-1)\) and \(10(x+3)\), then simplify both sides of the equation.
Move all terms involving \(x\) to one side of the equation and constants to the other side. Combine like terms to isolate \(x\).
Solve for \(x\) by dividing both sides of the equation by the coefficient of \(x\). Once you have the solution, substitute it back into the original equation to check that it satisfies the equation.
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Rational Expressions
Rational expressions are fractions that contain polynomials in the numerator and denominator. Understanding how to manipulate these expressions, including finding a common denominator, is crucial for solving equations involving them. In the given equation, the terms (x-1)/5 and (x+3)/2 are rational expressions that need to be combined and simplified.
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02:58
Rationalizing Denominators
Solving Linear Equations
Solving linear equations involves isolating the variable on one side of the equation to find its value. This process often includes combining like terms, using inverse operations, and maintaining equality throughout the manipulation. The equation presented requires applying these techniques to find the value of x that satisfies the equation.
Video consigliato:
04:02Solving Linear Equations with Fractions
Checking Solutions
Checking solutions is the process of substituting the found value back into the original equation to verify its correctness. This step ensures that the solution satisfies the equation and helps identify any potential errors made during the solving process. It is an essential practice in algebra to confirm that the derived solution is valid.
Video consigliato:
05:21Restrictions on Rational Equations
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Simplify: .
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