pasagot po patulong ibrainoy ko po maka sagot at follow

Answer:
3.
a.
[tex] \sqrt{ {x}^{2} } = x[/tex]
b.
[tex] \sqrt{16 } = 4[/tex]
c.(x + 4) (x - 4)
4. (x+10) (x-10)
5. (3x- 7) (3x + 7)