
Productos Notables
Authored by Kenia Maricela Martinez
Mathematics
10th Grade
Used 4+ times

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10 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
SEÑALE EL PRODUCTO QUE CORRESPONDE A UNA DIFERENCIA DE CUADRADOS:
Answer explanation
La diferencia de cuadrados se expresa como \( (a+b)(a-b) = a^2 - b^2 \). Esta fórmula muestra cómo se puede factorizar la diferencia entre dos cuadrados, siendo la opción correcta la tercera.
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
INDIQUE CUÁL DE ELLOS ES UN BINOMIO AL CUADRADO:
Answer explanation
El binomio al cuadrado se expresa como \( (a+b)^2 = a^2 + 2ab + b^2 \). Esta es la única opción que representa correctamente la expansión de un binomio al cuadrado.
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Answer explanation
Para desarrollar \( (x+2)^3 \), utilizamos la fórmula del cubo de un binomio: \( a^3 + 3a^2b + 3ab^2 + b^3 \). Aquí, \( a = x \) y \( b = 2 \), lo que da como resultado \( x^3 + 3(2)x^2 + 3(2^2)x + 2^3 = x^3 + 6x(x+2) + 8 \).
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Answer explanation
Para desarrollar $(a-b)^3$, utilizamos la fórmula del cubo de una diferencia: $a^3 - b^3 - 3ab(a-b)$. Por lo tanto, la respuesta correcta es $a^3 - b^3 - 3ab(a-b)$.
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Answer explanation
Para desarrollar \( (a+b)^3 \), utilizamos la fórmula \( a^3 + b^3 + 3ab(a+b) \). Esta es la expansión correcta, que incluye los términos cúbicos y el término mixto. Por lo tanto, la respuesta correcta es \( a^3+b^3+3ab(a+b) \).
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Answer explanation
Para desarrollar \( (x-5)(x+5) \), aplicamos la identidad de la diferencia de cuadrados: \( a^2 - b^2 = (a-b)(a+b) \). Aquí, \( a = x \) y \( b = 5 \), por lo que obtenemos \( x^2 - 25 \).
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Answer explanation
Para desarrollar \( (x+y)^2 \), aplicamos la fórmula del cuadrado de un binomio: \( a^2 + 2ab + b^2 \). Aquí, \( a = x \) y \( b = y \), lo que resulta en \( x^2 + 2xy + y^2 \), que es la respuesta correcta.
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