Domanda del libro di testo
In Exercises 35–54, solve each formula for the specified variable. Do you recognize the formula? If so, what does it describe? A = (1/2)bh for b
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Ch. 1 - Equations and Inequalities
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 2, Problema 35
In Exercises 29–36, simplify and write the result in standard form. √(12 - 4 × 0.5 × 5)
Guida verificata passo dopo passo1
Start by identifying the expression inside the square root: \(1^2 - 4 \times 0.5 \times 5\). This is the discriminant of a quadratic equation, but here we are simply simplifying it.
Simplify \(1^2\). Recall that \(1^2 = 1\).
Simplify the product \(4 \times 0.5 \times 5\). Multiply these numbers step by step: first \(4 \times 0.5\), then multiply the result by \(5\).
Subtract the result of \(4 \times 0.5 \times 5\) from \(1\). This gives the value inside the square root.
Finally, take the square root of the resulting value. If the value inside the square root is negative, the result will involve imaginary numbers, and you should express it in terms of \(i\), where \(i = \sqrt{-1}\).
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Square Root
The square root of a number is a value that, when multiplied by itself, gives the original number. In this context, the expression involves calculating the square root of a result derived from a mathematical operation. Understanding how to simplify square roots is essential for solving the problem.
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Imaginary Roots with the Square Root Property
Order of Operations
Order of operations is a set of rules that dictates the sequence in which mathematical operations should be performed to ensure consistent results. The acronym PEMDAS (Parentheses, Exponents, Multiplication and Division, Addition and Subtraction) helps remember this order. Applying these rules correctly is crucial for simplifying the expression accurately.
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Standard Form
Standard form in mathematics typically refers to expressing numbers in a conventional way, such as writing a polynomial in descending order of its degree or representing complex numbers in the form a + bi. In this exercise, simplifying the expression to standard form means presenting the final result clearly and concisely, which is important for clarity in mathematical communication.
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