Question

expand the following, (5x+8)(5x-8)​

Answer 1

Answer:

$(5x + 8)(5x - 8)$

$= 25 {x}^{2} - 40x + 40x - 64$

$= 25 {x}^{2} - 64$

Answer 2

(5x^2)-(8^2) = 25x^2-64