Question

what is the LCD of 55 and 45?

Answer 1

start from the lowest prime number
and see if it goes into both numbers

Answer 2

5*11 and 5*9 ?

Answer 3

yea

Answer 4

so that would be 99?

Answer 5

Factor both numbers into their prime factors:
45 = 3*3*5
55 = 5*11
Now multiply the highest power found of each unique factor

3*3*5*11

Answer 6

so its 55? or would i multiply 55 with 3?

Answer 7

3*3*5*11 =

Answer 8

495

Answer 9

That is correct. The lowest common multiple of 45 and 55 is 495.

Multiples of 45: {45, 90, 135, 180, 225, 270, 315, 360, 405, 450, 495}
Multiples of 55: {55, 110, 165, 220, 275, 330, 385, 440, 495, 550, 605}
495 is the first number that appears in both lists, agreed?

Answer 10

oh alright thank you:)

Answer 11

You can do the same procedure with polynomials, too.