Question

Identify which technique would be best applied to factor the polynomial below.

Answer 1

Answer:

A

Step-by-step explanation:

For factoring, if we can ever right a factor as  $(a)^2$ and another as  $(b)^2$  with a MINUS in between them, then the technique of "difference in two squares" is perfect!

From the problem shown, we can actually do this (shown below):

$x^2-25\\=(x)^2-(5)^2$

The rule is  $a^2-b^2=(a+b)(a-b)$

Thus the problem reduces to:

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

We have use "difference of two squares" here, hence answer choice A is right.