Question

A binomial has been partially factored, as shown below:

x2 − 25 = (x + 5)(_____)

Which of the following binomials represents the missing factor?

(x − 5) ((my answer))
(x + 5)
(x − 20)
(x + 20)

Answer 1

(x-5) is the answer. The equation is a difference of squares, if (x+5) is one answer the only other answer would be (x-5). Considering (x-5)(x+5) -5(5)= 25 x(x)= x^2