Answer:
[tex]a^{2} -16[/tex] = (a + 4) (a - 4)
Step-by-step explanation:
The given equation is [tex]a^{2} -16[/tex]
Now, By ALGEBRAIC IDENTITY:
[tex]a^{2} -b^{2} =(a - b) (a + b)[/tex]
Here, taking [tex]b^{2} = 16[/tex], we get b = 4
as [tex]4^{2} = 16[/tex]
So, the right hand side of [tex]a^{2} -16[/tex] is (a + 4) (a-4)
