Answer:
Step-by-step explanation:
this is the difference of two squares, which there is a formula for
(a+b)(a-b)
100[tex]x^{2}[/tex]-9
rewrite into squares
[tex](10x)^{2}[/tex] - [tex]3^{2}[/tex]
then a = 10x
and b = 3
(10x + 3 )(10x - 3 )