what is the factored form of the expression 144x² - 49?\na. (12x - 7)(12x + 7)\nb. (12x - 7)(12x - 7)\nc…

what is the factored form of the expression 144x² - 49?\na. (12x - 7)(12x + 7)\nb. (12x - 7)(12x - 7)\nc. (144x + 1)(x - 49)\nd. (144x - 1)(x + 49)

what is the factored form of the expression 144x² - 49?\na. (12x - 7)(12x + 7)\nb. (12x - 7)(12x - 7)\nc. (144x + 1)(x - 49)\nd. (144x - 1)(x + 49)

Answer

Explanation:

Step1: Identificar la diferencia de cuadrados

La expresión $144x^{2}-49$ sigue la forma $a^{2}-b^{2}$, donde $a = 12x$ ($(12x)^{2}=144x^{2}$) y $b = 7$ ($7^{2}=49$).

Step2: Aplicar la fórmula de factorización

La fórmula para factorizar $a^{2}-b^{2}$ es $(a - b)(a + b)$. Sustituyendo $a = 12x$ y $b = 7$, obtenemos $(12x-7)(12x + 7)$.

Answer:

A. $(12x - 7)(12x+7)$