Math Problem Statement

¿Cuál igualdad es correcta en los ejercicios 1 a 6? ¿Por qué? ¿Qué expresión falta en los ejercicios 7 al 12? 1. (x + 4 )(x + 4 ) = x^2 + 16 2. (x – 2 ) ( x – 5 ) = x^2 + 10x – 10 3. (x + 5)(x – 5) = (x – 5)^2 4. (x – 1 ) ( x – 7 ) = ( x – 1)^2 – ( x – 7 ) 5. (2x + a^2) (2x + a^2) = 4x^2 + 4xa^2 + a^4 6. (2x – 1 ) (x + 1/5) = 2x^2 + 3/5x – 1/5 7. (x^2 – y^2) / (¿?) = x – y 8. (x^3 + 3yx^2 + 3xy^2 + y^3) / (¿?) = x + y 9. ( x + a ) ( ¿?) = x^2 + (a + b)x + ab 10. (x^3 – y^3) / (¿?) = x^2 + xy + y^2 11. ( x + a ) ( ¿?) = x^2 + 2ax + a^2 12. (x^3 – 3yx^2 + 3xy^2 – y^3) / (¿?) = (x – y)^2

Solution

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Math Problem Analysis

Mathematical Concepts

Algebra
Factoring
Difference of Squares
Difference of Cubes
Quadratic Expansion
Binomial Theorem

Formulas

(a + b)^2 = a^2 + 2ab + b^2
(a - b)(a + b) = a^2 - b^2
(a - b)^3 = a^3 - 3a^2b + 3ab^2 - b^3

Theorems

Difference of Squares Theorem
Difference of Cubes Theorem
Binomial Expansion Theorem

Suitable Grade Level

Grades 9-12