math

posted by .

LCM of (2+9u),(4-81u^2)and (2-9u)

  • math -

    LOL

    a^2 - b^2 = (a-b)(a+b) identity, know it

    so
    4 - 81 u^2 = (2-9u)(2+9u)

    so
    4 - 81 u^2 is the multiple you are looking for

Respond to this Question

First Name
School Subject
Your Answer

Similar Questions

  1. Math

    I still do not understand Today was my first day learning how to add 3 sets of fractions with different denominators and I did not get it. I need help with the following please. 1/8 + 1/2 + 3/4 = Waht is the LCM?
  2. Math

    Can someone check my answers for me pls? True or False LCM of 10 and 18 is 180; False LCM of 8 and 30 is 120; True LCM of 3 and 4 is 12; True LCM of 42 and 28 is 168; True LCM of 9 and 15 is 45; True
  3. Math

    Find the LCM of 11(s-3) and 33(s-3). LCM of 11 is 11*1 LCM of 33 is 3*11 LCM is 11*3*1=33 What do I do from here?
  4. Algebra

    Find the LCM of (7+9u), (49-81u^2), and (7-9u) Find the LCM of 15x^8 and 75x^8
  5. Algebra

    I am stumped by these two LCM questions for some reason. Find The LCM for #1 2(R-7) and 14(R-7) #2 (1+4r), (1-16r^2), and (1-4r) It seems like #1 is already at the LCM and #2 would be (1+4r)(1-4r) Am I even vaguely correct?
  6. Algebra

    FIND THE LCM OF (2+9U),(4-81U)AND (2-9U)?
  7. Algebra

    FIND THE LCM OF (2+9U),(4-81U)AND (2-9U)?
  8. Algebra

    Find the LCM of(2+9u),(4-81u)AND (2-9u)??
  9. MATH{lcm}

    ok here is a list of 2 numbers Each and I had to find the LCM of... also the answers... 1.5\10=10 2.8\7=64 3.9\12=36 4.6\8=24 5.3\21=21 6.5\9=45
  10. Math

    Find the LCM and GCF of the following numbers: 1) 2016 and 756 2) 10140 and 705551 3) 17 664 and 288 4) 3960, 150 and 495 I believe the answers are: 1) LCM = 6048 GCF = 252 2) LCM = 7 154 287 140 GCF = 1 3) LCM = 52 992 GCF = 2208 …

More Similar Questions