Find the LCM of the following polynomials? X^2-81; X^+11X+18?

Question

a) (x-3)(x+3)(x+2)

b) (x-9)(x+9)(x-2)

c) (x-9)(x+9)^2 (x+2)

d) (x-9)(x+9)(x+2)

e)none of the above

Answer 1

Factor

(x+9)(x-9);(x+9)(x+2)

So, D; you only need one (x+9) for the LCM.