2
-3
Find the least common denominator of
x2 - 4x – 21
and
x² - 4

LCD = (x - 7)(x + 3)(x + 2)(x - 2)

Step-by-step explanation:

First, we factor each polynomial.

x^2 - 4x - 21 = (x - 7)(x + 3)

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

There are 4 different factors and none are in common, so the LCD is the product of all the factors.

LCD = (x - 7)(x + 3)(x + 2)(x - 2)

your answer is b ^w^ hope i

the least common denominatore of 7 and 2 is 9

step-by-step explanation:

7+2=9