Question

Which of the expressions below can be factored using the difference of squares method?

Answer 1

Answer: A. $9x^2 - 16y^2$ .

Step-by-step explanation:

• A difference of squares problem is factored as :$a^2 - b^2 = (a + b)(a - b)$
• For this both terms in the form of squares and a minus sign between them.

From all the options only option A has both terms square and they minus sign between them.

Also, $9x^2 - 16y^2= (3x)^2-(4y)^2=(3x+4y)(3x-4y)$

Here a= 3x and b= 4

Hence, the correct answer is A. $9x^2 - 16y^2$ .