Factor the expression. 16x ^2 - 25?

(4x - 5)(4x + 5)

You should have been able to do this one!

=16x² - 25
= (4x + 5)(4x - 5)

Answer: (4x + 5)(4x - 5) are the factors.

a^2 - b^2 = (a + b)(a - b)

16x^2 - 25
= 16x^2 + 20x - 20x - 25
= (16x^2 + 20x) - (20x + 25)
= 4x(4x + 5) - 5(4x + 5)
= (4x + 5)(4x - 5)

(4x)² - 5²
(4x - 5)(4x + 5)

16x² - 25
(4x + 5)(4x - 5)

if you foil this, you get:
4x² + 20x - 20x - 25
4x² - 25, so this is correct!

hope this helped!

(4x - 5)(4x + 5)
both of the two answers are correct...
if your questions are like this.
e-mail me , ok?

hope it helps!!!

aja!

(4x -5) (4x+5)