Question

Which will result in a difference of squares?

Answer 1

Answer:

Option C) is correct

That is the result should be in a difference of squares is

$(-7x+4)(-7x-4)=(7x)^2-4^2$

Step-by-step explanation:

To find the result in the form of differences in squares

Given that the expression is (-7x+4)(-7x-4)

$(-7x+4)(-7x-4)=(-7x)^2-4^2$ ( by using the identity $(a+b)(a-b)=a^2-b^2$ )

Here a=-7x and b=4

$=(7x)^2-4^2$

Therefore $(-7x+4)(-7x-4)=(7x)^2-4^2$ which results as a difference of squares.

Therefore Option C) is correct

That is the result should be in a difference of squares is

$(-7x+4)(-7x-4)=(7x)^2-4^2$