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lvasquev462 Group Title

Algebra 1 help

  • one year ago
  • one year ago

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  1. lvasquev462 Group Title
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    |dw:1363018027305:dw|

    • one year ago
  2. lvasquev462 Group Title
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    ists 2x squared and 5x squared

    • one year ago
  3. phi Group Title
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    you can use ^ to show exponents -14+2x^2 -3x + 5x^2 + 6-6x better use the equation editor \[ -14+2x^2 -3x + 5x^2 + 6-6x \]

    • one year ago
  4. phi Group Title
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    when adding you can change the order so you could write it like this \[ 5x^2 + 2x^2 -3x-6x-14+6 \]

    • one year ago
  5. phi Group Title
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    it should be clear what -14+6 is for the x^2 terms: if you have 5 x^2 terms and add 2 more x^2 terms, how many x^2 terms do you have ?

    • one year ago
  6. lvasquev462 Group Title
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    -8

    • one year ago
  7. lvasquev462 Group Title
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    and \[x ^{2}\]

    • one year ago
  8. phi Group Title
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    if you have 5 x^2 terms and add 2 more x^2 terms, how many x^2 terms do you have ?

    • one year ago
  9. phi Group Title
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    if you think of x^2 as a "thing" and you have 5 of them and add 2 more, how many do you have ?

    • one year ago
  10. lvasquev462 Group Title
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    7 x \[7x ^{2}\]

    • one year ago
  11. phi Group Title
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    yes 7 x^2 so far you have \[ 7x^2 -3x-6x-8 \] now how many of the x's

    • one year ago
  12. lvasquev462 Group Title
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    2 x's because 3x and 6x right

    • one year ago
  13. phi Group Title
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    it is -3x -6x we could "factor out" the x to get (-3-6) x now what is -3-6 ?

    • one year ago
  14. lvasquev462 Group Title
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    3

    • one year ago
  15. lvasquev462 Group Title
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    is the 6 a negative too

    • one year ago
  16. lvasquev462 Group Title
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    if the six is negative it be -9 right

    • one year ago
  17. phi Group Title
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    yes -3-6 is -9 so the answer is -9x the whole answer is \[ 7x^2 -9x-8 \] if negative numbers are unclear, see http://www.khanacademy.org/math/arithmetic/absolute-value/adding_subtracting_negatives/v/negative-numbers-introduction

    • one year ago
  18. lvasquev462 Group Title
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    Thank you

    • one year ago
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