Least Common Denominator

Question

What's the Least Common Denominator (LCD) of x^2-4 and x^2+4x+4?

(x2 - 4)(x + 2)(x + 2)

(x + 2)(x - 2)

(x + 2)(x + 2)(x - 2)

(x + 2)(x + 2)(x + 2)(x - 2)

(x + 2)(x + 2)(x - 2)(x - 2)

Answer 1

x^2-4=(x-2)(x+2)

x^2+4x+4=(x+2)(x+2)

LCD=(x+2)(x+2)(x-2)