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anjum1

  • 2 years ago

whose product is+15 and whose sum is -8???

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  1. erdog82
    • 2 years ago
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    Ok, so when you multiply two negatives it equals a positive, right?

  2. anjum1
    • 2 years ago
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    yeh

  3. erdog82
    • 2 years ago
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    So, then how do you get 15 when multiplying 2 negative numbers?

  4. anjum1
    • 2 years ago
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    no that is the question

  5. erdog82
    • 2 years ago
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    Okay, how do you get 15 when multiplying 2 positive numbers?

  6. anjum1
    • 2 years ago
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    5*3

  7. erdog82
    • 2 years ago
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    So, since a negative times a negative is a positive, what are the numbers now?

  8. anjum1
    • 2 years ago
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    thank you

  9. erdog82
    • 2 years ago
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    Your welcome! ☺

  10. erdog82
    • 2 years ago
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    And so, -5x-3= 15 and -3+-5= -8 !!

  11. erdog82
    • 2 years ago
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    Is that all you need help with?

  12. anjum1
    • 2 years ago
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    whose product is -6 and whose sum is +1

  13. anjum1
    • 2 years ago
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    3*2

  14. anjum1
    • 2 years ago
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    thanks you done it again

  15. erdog82
    • 2 years ago
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    okay, so if you want those 2 numbers to have a sum of 1, which number do you turn negative?

  16. anjum1
    • 2 years ago
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    2

  17. erdog82
    • 2 years ago
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    good!

  18. erdog82
    • 2 years ago
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    so -2x3 = -6 and -2+3 = 1

  19. anjum1
    • 2 years ago
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    whose product is -12 and whose sum is -4

  20. erdog82
    • 2 years ago
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    How can you get 12 when multiplying 2 positive numbers?

  21. anjum1
    • 2 years ago
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    3*4

  22. erdog82
    • 2 years ago
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    well, that and 2x6

  23. anjum1
    • 2 years ago
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    thanks

  24. erdog82
    • 2 years ago
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    So, which number do you turn negative to get a sum of -4?

  25. anjum1
    • 2 years ago
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    -6

  26. erdog82
    • 2 years ago
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    Good!

  27. anjum1
    • 2 years ago
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    whose product is -12 and whose sum is -4

  28. anjum1
    • 2 years ago
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    sorry wrong one

  29. anjum1
    • 2 years ago
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    whose product is -16 and whose sum is 0

  30. erdog82
    • 2 years ago
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    How do you get 16 when multiplying 2 positive numbers (that are the same) ?

  31. anjum1
    • 2 years ago
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    4

  32. anjum1
    • 2 years ago
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    thank you

  33. erdog82
    • 2 years ago
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    Now you need to make 1 negative, and if you add -4 +4 what do you get?

  34. anjum1
    • 2 years ago
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    0

  35. anjum1
    • 2 years ago
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    what about 4-4

  36. erdog82
    • 2 years ago
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    0

  37. anjum1
    • 2 years ago
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    okay thank you but it says sum doesnt that matter

  38. erdog82
    • 2 years ago
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    Sum is addition!

  39. erdog82
    • 2 years ago
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    So it doesn't matter, but adding a negative is like subtracting a positive!

  40. anjum1
    • 2 years ago
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    doesnt it not count as minus (because i heard my teacher say something like that)

  41. anjum1
    • 2 years ago
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    okay

  42. anjum1
    • 2 years ago
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    okay next q

  43. erdog82
    • 2 years ago
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    What grade are you learning this in?

  44. anjum1
    • 2 years ago
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    9

  45. anjum1
    • 2 years ago
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    in the uk

  46. erdog82
    • 2 years ago
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    Okay

  47. erdog82
    • 2 years ago
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    What is that equivalent to in the us?

  48. anjum1
    • 2 years ago
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    |dw:1362327623653:dw| +5x +6

  49. erdog82
    • 2 years ago
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    Huh?

  50. anjum1
    • 2 years ago
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    i dont know

  51. anjum1
    • 2 years ago
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    |dw:1362327701244:dw|

  52. anjum1
    • 2 years ago
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    factorrise

  53. erdog82
    • 2 years ago
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    I don't know what your asking, please copy the question directly ☺

  54. anjum1
    • 2 years ago
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    x squared +5x+6

  55. erdog82
    • 2 years ago
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    What do you need to do with it?

  56. anjum1
    • 2 years ago
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    factorise

  57. erdog82
    • 2 years ago
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    okay.

  58. erdog82
    • 2 years ago
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    http://www.mathsisfun.com/algebra/factoring.html read this, it may help you understand it better!

  59. erdog82
    • 2 years ago
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    Did you read it?!

  60. anjum1
    • 2 years ago
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    yes

  61. erdog82
    • 2 years ago
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    Did it help?

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