Question

Expand.
If necessary, combine like terms.
(x+5)(x-5)=(x+5)(x−5)=

Answer 1

x² -25

Explanation:

(x +5)(x -5) = x(x -5) +5(x -5) = x² -5x +5x -25 . . . . . 5x terms cancel

= x² -25

_____

This is an example of the factoring of the difference of squares:

(a+b)(a-b) = a²-b²