Which expression is the factored equivalent of x2 - 16? A. (x + 1)(x - 16) B. (x - 4)(x + 4) C. (x - 4)2 D. (x + 2)(x - 8)

B

Step-by-step explanation:

x^2-16 ⇒ x^2-4^2 ⇒ B=4 ⇒ (x-4)(x+4) which is B.

answer:

the position of equilibrium will shift to the left.

step-by-step explanation:

the general equation for the dissociation of a weak base is

b + h₂o   ⇌   bh⁺ + oh⁻

according to le châtelier's principle, when a stress is applied to a system at equilibrium, the system will respond in a way that tends to relieve the stress.

if you apply a stress by adding more bh⁺ or oh⁻,   the system will respond by moving in a direction that gets rid of the added ions.

the position of equilibrium will shift to the left, forming more of the undissociated base.