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anonymous

  • 5 years ago

(4x²-3x+7)-(-3x²+4x-6)

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  1. anonymous
    • 5 years ago
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    teacher is telling me im wrong please someone show me where here is what I got using the column method add equations together 4x²-3x+7 3x²+4x-6 _________ 7x²-x+13 ending result cf of 1st & last term 7x²=(7x)(x) 13=(-1)(-13) 7(x-1)(x-13)

  2. anonymous
    • 5 years ago
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    Your mistake is that you added them, where you should subtract.

  3. anonymous
    • 5 years ago
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    You should multiply each term of the second parenthesis by -1 before you add the like terms to the the first parenthesis .

  4. anonymous
    • 5 years ago
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    Does that help?

  5. anonymous
    • 5 years ago
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    ty

  6. anonymous
    • 5 years ago
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    You're welcome!

  7. anonymous
    • 5 years ago
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    after multiplying by -1 and adding them together i got 7x^2-7x+13 which is the same answer I had to start with the teacher said was wrong

  8. anonymous
    • 5 years ago
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    Look carefully!! It's not the same.

  9. anonymous
    • 5 years ago
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    ur right I forgot about the -7x

  10. anonymous
    • 5 years ago
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    so then this is the answer 7x^2-7x+13

  11. anonymous
    • 5 years ago
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    Exactly!

  12. anonymous
    • 5 years ago
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    do we factor it down any further

  13. anonymous
    • 5 years ago
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    No, that's all. It can't be factored.

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