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

14 comments:

  1. (a)[2^4 X 179]
    (b)131 cannot be factorize as it is a prime number.
    (c)[2^5 X 3 X 5 x 7]
    (d) negative numbers are not prime factors

    ReplyDelete
  2. 2^2 x 179
    131
    2^ x 3 x 5 x 7^2
    -48 is not a positive number, hence, cannot be primed factorised

    ReplyDelete
  3. (a) 2^3 * 179
    (b)131 canot be factorized because it is a prime number.
    (c)2^4 * 5 * 7^2
    (d)-48 is negative and negative numbers cannot be prime factorized as they are not prime.

    ReplyDelete
  4. a) 2^3 * 179
    b) 131 * 1
    c) 2^4 * 5 * 7^2
    d) -48 is negative and cannot be prime factorised

    ReplyDelete
  5. a) 2^3 x 179
    b)131 is a prime number itself so it cannot be factorized
    c) 2^8 x 5 x 3
    d) 2^4 x 3 x 5 x 7^2

    ReplyDelete
  6. a) 2^3 x 179
    b) 131 is a prime number thus it cannot be factorize.
    c) 2^4 x 3 x 5 x 7^2
    d) -48 is a negative integer thus is cannot be factorize.

    ReplyDelete
  7. a) 2^3 × 179
    b) 131 is a prime number itself
    c) 2^4 × 5 × 3 × 7^2
    d) -48 is a negetive number, and only posived numbers can be prime factorised

    ReplyDelete
  8. a)2^3x179
    b)131 can only be divided by itself and 1
    c)2^4x5x7^2x3
    d)-48 is a negative number.it cannot be factorised

    ReplyDelete
  9. a)2^3x179
    b)131 is a prime number
    c)2^4x5x3x7^2
    d)-48 is a negative number so it can't be factorised.

    ReplyDelete
  10. a)2^3x179
    b)131 is already a prime number
    c)2^4x7^2x5x3
    d)-48 is a negative number and is impossible to factorise

    ReplyDelete
  11. This comment has been removed by the author.

    ReplyDelete
  12. a) 2^3 x 179
    b)131 is a prime number
    c)2^4 × 3 × 5 × 7^2
    d) negative numbers cannot be factorized.

    ReplyDelete
  13. a) 2^4 X 179
    b) 131 cannot be factorize as it is a prime number.
    c) 2^5 X 3 X 5 X 7
    d) negative numbers are not prime factors

    ReplyDelete
  14. Charles O'Rourke1/23/2011 05:06:00 PM

    2^3 x 179
    131 is a prime number and can't be fatorized
    2^4x7^2x5x3
    -48 is negative and only positive numbers cannot be factorized

    ReplyDelete