Wednesday, January 19, 2011

Factors (lesson 1)

Watch the following videos and complete the task that follows.

Video 1 Prime Factorisation






Video 2: Index Notation





Find the prime factors of the following, where possible express your answers in index notation
(a) 1432
(b) 131
(c) 11760
(d) -48
post your answers under comment

7 comments:

  1. (a). 2,179- 2^3 X 179
    (b). 131
    (c). 2,5,3,7 2^4 X 5 X 3 X 7^2
    (d). (does not have any)

    ReplyDelete
  2. (a)2^3 X 179
    (b)131
    (c)2^4X3X5X7^2
    (d)2^4X-3

    ReplyDelete
  3. (a) 263 x 179
    (b) 131
    (c) 2^4 x 3 x 5 x 7^2
    (d) (not sure)

    ReplyDelete
  4. A: 1432=2^3x179
    B:It does not have. ans: 131
    C: 2^4x3x5x7
    D:48/2=24/2=12/2=6/2=3 so it is 2^4x-3 (not sure)

    ReplyDelete
  5. A: 2, 2^2x179
    B: 131 is a prime
    C: 2^4x3x5x7^2
    D: -2^2x2x2x3

    ReplyDelete
  6. A:2^3x179
    B:does not have:131
    C:2^4x3x5x7
    D:Does not have any

    ReplyDelete
  7. A: 2^3 x 179 = 1432
    B: 131 is a prime number, so not possible to express as a notation
    C: 2^4 x 3 x 5 x 7^2 = 11760
    D: - (2^4 x 3)

    ReplyDelete