Respuesta :

[tex] 5x^2 - 45 = 5(x^2 - 9) = 5(x^2 - 3^2) = 5(x - 3) (x + 3)[/tex]


Answer:  5(x - 3) (x + 3)

Answer:

Option A is correct

[tex]5(x+3)(x-3)[/tex]

Step-by-step explanation:

Using identity rule:

[tex](x^2-a^2) = (x-a)(x+a)[/tex]

To factor completely:

[tex]5x^2-45[/tex]

Take 5 common out we have;

[tex]5(x^2-9)[/tex]

Apply the identity rule

then;

[tex]5(x+3)(x-3)[/tex]

Therefore, the complete factored of the given equation is: [tex]5(x+3)(x-3)[/tex]