Answer :
[tex] \orange{ \boxed{ \pink{ {x}^{2} - 9}}}[/tex]
Step-by-step explanation :
We can use the formula that :
(a + b) (a - b) = a(a - b ) + b(a - b)
= a² - ab + ab - b² = a² - b²
_________________________
(x + 3) (x - 3)
We have :
a = x
b = 3
So :
( x + 3 ) ( x - 3 )
x (x - 3 ) + 3 (x - 3 )
x² - 3x + 3x - 9
x² - 9
Answer = x² - 9
