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anonymous

  • 4 years ago

Factor the trinomial. 16 – 6y – y^2

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  1. aroub
    • 4 years ago
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    -y^2-6y+16 y^2+6y-16 (y+8)(y-2)

  2. anonymous
    • 4 years ago
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    it's telling me it's wrong

  3. anonymous
    • 4 years ago
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    Going step by step, you know the y^2 is negative, so it will factorise as (a+y)(b-y). Now just find two numbers, a and b, so that when you expand it you get 16-6y-y^2

  4. anonymous
    • 4 years ago
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    Did that make sense so far? And, can you do the next step or do you need a clue?

  5. anonymous
    • 4 years ago
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    im gonna take another shot at it. i was mixing around a few numbers before but i couldn't get anything to work

  6. anonymous
    • 4 years ago
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    Remember that (y+_)(y+_) will always give you a positive y^2, so to get a negative y^2 you need (_+y)(_-y).

  7. anonymous
    • 4 years ago
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    yep

  8. anonymous
    • 4 years ago
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    Where _ just stands for random numbers

  9. anonymous
    • 4 years ago
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    Also notice that a and b will have to multiply to make 16, which makes your choices quite simple.

  10. anonymous
    • 4 years ago
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    (8+y)(2-y)

  11. anonymous
    • 4 years ago
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    Perfect!

  12. anonymous
    • 4 years ago
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    danka

  13. anonymous
    • 4 years ago
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    If you want to do it a different way, do what aroub did earlier by multiplying by -1, but remember at the end that you need to times one of the factors by -1 to get a -y in there :D

  14. anonymous
    • 4 years ago
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    You're most welcome :D

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