171k views
0 votes
Which of the following represents the factorization of the binomial below 25x^2-64y^2?

1 Answer

5 votes

The Options are:

  • (A)(5x+y)(x-8y)
  • (B) (5x+8y)(5x-8y)
  • (C)(5x+8y)(5x+8y)
  • (D) (5x-8y)(5x-8y)

Answer:

(B) (5x-8y)(5x+8y)

Explanation:

Given the binomial:
25x^2-64y^2


25x^2-64y^2\\=5^2x^2-8^2y^2\\=(5x)^2-(8y)^2

The essence of expressing it in this form is so as to be able to apply a principle of factorization called the "Difference of Two Squares"

Difference of Two Squares:
a^2-b^2=(a-b)(a+b)

Therefore taking: a=5x; b=8y


(5x)^2-(8y)^2=(5x-8y)(5x+8y)\\

Thus (5x-8y)(5x+8y) is the factorization of the binomial
25x^2-64y^2.

The correct option is B

User Maxtuzz
by
5.0k points
Welcome to QAmmunity.org, where you can ask questions and receive answers from other members of our community.