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-   -   Question about Proof of Real Number.. (https://www.askmehelpdesk.com/showthread.php?t=832901)

  • Jun 21, 2017, 11:54 AM
    syed4all
    Question about Proof of Real Number..
    Q: For real numbers a,b show the following by stating the properties used:

    I) (-a)b = a(-b) = -ab

    ii) (-a)(-b) = ab
  • Jun 21, 2017, 01:15 PM
    smoothy
    This is YOUR homework... show us what YOU think the answer is and why. Site rules require it.
  • Jun 21, 2017, 01:39 PM
    Rebecca131
    These are pretty tricky.

    I) (-a)b = a(-b) = -ab

    Attachment 48806


    ii) (-a)(-b) = ab

    Attachment 48807

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