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smiley2015 Group Title

Simplify the following expression: (5x2 + 3x + 4) − (2x2 + 5x − 1). If the final answer is written in the form Ax2 + Bx + C, what is the value of A? The 2 be hide 5x is squared and so is the one by 2x

  • one year ago
  • one year ago

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  1. ryan123345 Group Title
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    Distribute the negative

    • one year ago
  2. smiley2015 Group Title
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    So -1?

    • one year ago
  3. jazy Group Title
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    I have terrible drawing skills, sorry.

    • one year ago
  4. Claudilovely Group Title
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    |dw:1363207136675:dw|

    • one year ago
  5. smiley2015 Group Title
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    So 3x - 5 - 5x + 1

    • one year ago
  6. jazy Group Title
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    I meant:|dw:1363207208912:dw|

    • one year ago
  7. jazy Group Title
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    Very close. What is -1 times 1?

    • one year ago
  8. smiley2015 Group Title
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    -1

    • one year ago
  9. jazy Group Title
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    Right! So your equation would be 3x - 5 - 5x - 1. Can you combine the like terms?

    • one year ago
  10. smiley2015 Group Title
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    Yes. the x

    • one year ago
  11. jazy Group Title
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    Lets rearrange it so its easier to work with. Remember to keep the symbol in front of each term. 3x - 5x - 5 - 1 First off, what is 3x - 5x?

    • one year ago
  12. smiley2015 Group Title
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    2x

    • one year ago
  13. GiGIgo3 Group Title
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    -2x-6

    • one year ago
  14. jazy Group Title
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    Close, it would be a negative 2.

    • one year ago
  15. jazy Group Title
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    @GiGIgo3 please do not post direct answers. (:

    • one year ago
  16. smiley2015 Group Title
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    Ok

    • one year ago
  17. jazy Group Title
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    So now we have: -2x - 5 - 1 -5 - 1 = ?

    • one year ago
  18. smiley2015 Group Title
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    6

    • one year ago
  19. jazy Group Title
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    Negative 6. (: So our expression is: -2x - 6

    • one year ago
  20. smiley2015 Group Title
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    Ok. Thanks!

    • one year ago
  21. jazy Group Title
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    You're welcome! Oh and:\[\Huge \mathcal{\text{Welcome To OpenStudy} ☺}\]

    • one year ago
  22. smiley2015 Group Title
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    Thanks! can you help me some more

    • one year ago
  23. jazy Group Title
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    Sure thing!

    • one year ago
  24. smiley2015 Group Title
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    Simplify the following expression: (5x2 + 3x + 4) − (2x2 + 5x − 1). If the final answer is written in the form Ax2 + Bx + C, what is the value of A?

    • one year ago
  25. smiley2015 Group Title
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    The 2 be hide 5x is squared and so is the one by 2x

    • one year ago
  26. jazy Group Title
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    \[(5x^2 + 3x + 4) - (2x^2 + 5x - 1)\]We have to distribute the -1. \[(-1)\stackrel{\Huge\curvearrowright}(2x^2 + 5x - 1)\]-1 * 2x^1 = -2x^2 -1 * 5x = -5x -1 * -1 = 1 Now we have: \[5x^2 + 3x + 4 - 2x^2 - 5x + 1\]Combine like terms. 5x^2 - 2x^2 = 3x^2 3x - 5x = -2x 4 + 1 = 5 And we end up with: \[\large 3x^2 - 2x + 5\]

    • one year ago
  27. jazy Group Title
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    \[\large Ax^2 + Bx + C\] \[\large 3x^2 - 2x + 5 \] So what is A?

    • one year ago
  28. smiley2015 Group Title
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    3x2

    • one year ago
  29. jazy Group Title
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    Just the 3. (:

    • one year ago
  30. smiley2015 Group Title
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    Thanks! I have some more if that is ok?

    • one year ago
  31. jazy Group Title
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    I've gtg right now, sorry. :/ Maybe @hartnn or @Luis_Rivera can continue to help you. I hope I helped!

    • one year ago
  32. smiley2015 Group Title
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    You did thanks!

    • one year ago
  33. hartnn Group Title
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    one suggestion though, make new post for new question. so that many others can help you too :)

    • one year ago
  34. smiley2015 Group Title
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    How do I do that?

    • one year ago
  35. hartnn Group Title
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    you can 'close' this question .

    • one year ago
  36. smiley2015 Group Title
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    Ok. Thanks

    • one year ago
  37. hartnn Group Title
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    good ! :) welcome ^_^

    • one year ago
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