JUST PLEASE HELP ME WITH B. AND EXPLAIN HOW YOU GOT YOUR ANSWER‼️​

Which expression is factored form? x^2+14x+48 a) (x-8)(x-6) b) (x+6)(x-8) c) (x+8)(x-6) d) (x+6)(x+8)

Find the domain of the following expression: 1/(√x)-2

Maurice has 54 fewer comic books than rebecca. they have 130 comic books together .how many comic books are in maurices collection ? how many comic books are in rebeccas collection