Which will result in a difference of squares?

(-7x+4) (-7x+4)

(-7x+4) (4-7%)

0 (-7x+4) (-78-4)

(-7x+4) (7x-4)

The expression which will result in difference of two squares is:

(-7x + 4) · (-7x - 4)

Step-by-step explanation:

We know that the formula of the type:

(a-b) (a+b) = a²-b²

i. e. it is a difference of two square quantities. (a^2 and b^2)

since,

a = - 7x, b=4

(-7x+4) (-7x-4) = (-7x) ² - (4) ²

= (7x) ² - 4²

So the expression is a difference of two square quantities:

(7x) ² and (4) ²

Hence the answer is (-7x + 4) · (-7x - 4) ...