Question

Which of the following is the LCM of the polynomials?

Answer 1

\[(x ^{2}+10x+9) \] and \[(x ^{2}-1)\]

Answer 2

Answer choices:
A. (x+1)
B. (x+1) (x+9)
C. (x+1) (x-1)
D. (x+1) (x-1) (x+9)

Answer 3

x+1

Answer 4

x^2 +10x+ 9 = (x+1)(x+9)
x^2 - 1 = (x+1)(x-1)

x+1 is common to both so is only used once

lcm = (x+1)(x-1)(x+9)

D

(x+1) is the GCF of the polynomials