Question

find the product of bracket (5x + 9) (5x-9)​

Answer 1

Answer:

Step-by-step explanation:

Using identity (a+b)(a-b) = a²-b²

We get product = 25x²-81

Answer 2

Answer:

(5x+9)(5x-9)

${(5x)}^{2} - {9}^{2}$

$25 {x}^{2} - 81$

as

$(a + b)(a - b) = {a}^{2} - {b}^{2}$

hope it helps