Skip to main content
Ch. R - Algebra Review
Lial - Trigonometry 12th Edition
Lial12th EditionTrigonometryISBN: 9780136552161, 9780135440780, 9780136881117, 9780135440827, 9780135924891Non è quello che usi tu?Cambia libro di testo
Capitolo 1, Problema 55

Find each product. See Example 5. (5r - 3t²)²

Guida verificata passo dopo passo
1
Recognize that the expression is a square of a binomial: \((5r - 3t^{2})^{2}\). This means you will use the formula for the square of a binomial: \((a - b)^{2} = a^{2} - 2ab + b^{2}\).
Identify the terms \(a\) and \(b\) in the binomial: here, \(a = 5r\) and \(b = 3t^{2}\).
Calculate the square of the first term: \(a^{2} = (5r)^{2} = 25r^{2}\).
Calculate twice the product of the two terms: \(-2ab = -2 \times 5r \times 3t^{2} = -30rt^{2}\).
Calculate the square of the second term: \(b^{2} = (3t^{2})^{2} = 9t^{4}\). Then, combine all parts to write the expanded expression as \(25r^{2} - 30rt^{2} + 9t^{4}\).

Risposta video verificata per un problema simile:

Questa soluzione video è stata consigliata dai nostri tutor come utile per risolvere questo problema.
Durata del video:
3m

Concetti chiave

Ecco i concetti essenziali che devi comprendere per rispondere correttamente alla domanda.

Binomial Expansion

Binomial expansion involves expanding expressions raised to a power, such as (a + b)². It follows the formula (a + b)² = a² + 2ab + b², which helps in simplifying and finding the product of binomials.
Video consigliato:
Percorso guidato
3:42
Rationalizing Denominators Using Conjugates

Polynomial Multiplication

Polynomial multiplication requires multiplying each term in one polynomial by every term in the other. This process ensures all products are accounted for and combined correctly to simplify the expression.
Video consigliato:
Percorso guidato
5:35
Introduction to Quadratic Equations

Exponents and Like Terms

Understanding exponents is crucial when squaring terms, as powers multiply (e.g., (t²)² = t⁴). Combining like terms after expansion simplifies the expression by adding coefficients of terms with the same variables and exponents.
Video consigliato:
Percorso guidato
4:28
Introduction to Inverse Trig Functions