Question

Factor this polynomial expression.

Answer 1

Answer:

(x+5)(x-5)

Step-by-step explanation:

x^2 - 25

This can be written as

x^2 - 5^2

We know that this is the difference of squares

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

x^2 - 5^2 = (x+5)(x-5)

Answer 2

Answer:

B. (x + 5)(x - 5)

Step-by-step explanation:

Factor the following:

$\longrightarrow$ x² - 25

25 = 5²:

$\longrightarrow$ x² - 5²

Factor the difference of two squares.

a² - b² = (a + b)(a - b):

$\longrightarrow$ (x + 5)(x - 5)