Answer:
It is (x - 7)(x + 7)
Step-by-step explanation:
[tex] {x}^{2} - 49 \\ = {x}^{2} - {7}^{2} [/tex]
from the "difference of two squares"
[tex]( {a}^{2} - {b}^{2} ) = (a - b)(a + b)[/tex]
take;
a » x
b » 7
substitute:
[tex]( {x}^{2} - {7}^{2} ) = (x - 7)(x + 7)[/tex]
