Factor Completely: x^2 - 169

A) (x - 4) (x + 42)

B) (x - 13) (x + 13)

C) (x - 13) (x - 13)

D) (x + 16) (x - 10)

Question

Wrinkles

Mathematics

19 April, 23:10

Factor Completely: x^2 - 169

A) (x - 4) (x + 42)

B) (x - 13) (x + 13)

C) (x - 13) (x - 13)

D) (x + 16) (x - 10)

+1

Answers (2)

Know the Answer?

Owen Santana · Answer 1

It would be B. (x-13) (x+13). 13 times 13 is 169 and multiplying a negative and a positive will still give a negative value

Gretchen Holden · Answer 2

The answer is B

Step-by-step explanation:

As 169 is a perfect square of 13 and the formula is, a²-b² = (a+b) (a-b). Or you can try to expand it out:

(x+13) (x-13) = x² - 13x + 13x - 169

= x² - 169

(Hope you understand)

Factor Completely: x^2 - 169A) (x - 4) (x + 42)B) (x - 13) (x + 13)C) (x - 13) (x - 13)D) (x + 16) (x - 10)

Factor Completely: x^2 - 169

A) (x - 4) (x + 42)

B) (x - 13) (x + 13)

C) (x - 13) (x - 13)

D) (x + 16) (x - 10)