Question

find the product of (x+3) and (x-3)

Answer 1

use the difference of squares formula
a^2-b^2=(a+b)(a-b)

Answer 2

(x+3)(x-3)=x^2-3^2=.....

Answer 3

so (x+3)(x-3)=x^2 - 9

Answer 4

we will use formula: different of two square:
(a+b)(a-b)=a^2-b^2

Answer 5

@Laritza does it make sense?

Answer 6

@Ksanka yes, thank you!