Question

What is the factored form of x2−49 ? a. (x−7–√)(x 7–√) b. (x−7–√)(x−7–√) c. (x 7)(x−7) d. (x−7)(x−7)

Answer 1

Answer: (x+7)(x-7)

The order of the factors does not matter. Therefore, that expression is equivalent to (x-7)(x+7).

For more information, search out "difference of squares rule".