Question

(8+9x), (64-81x^2), (8-9x)

LCM is

Answer 1

Did you notice that
(8+9x)(8-9x) = 64 - 81x^2 ?

hint:
what would be the LCM for

6 , 42, and 7 ? , notice 6x7 = 42

Answer 2

Note that when (8+9x) and (8-9x) are multiplied,
(8+9x)(8-9x)
= 64 + 72x - 72x - 81x^2
= 64 - 81x^2

Thus the least common multiple is 64 - 81x^2

hope this helps~ :3

Answer 3

thanks