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elegant11 Group Title

Solve |2x – 4| < 6 x < –1 or x > 5 x < 5 1 < x < 5 –1 < x < 5

  • one year ago
  • one year ago

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  1. geerky42 Group Title
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    HINT: |2x – 4| < 6 is same thing as -6 < 2x – 4 < 6

    • one year ago
  2. Butterfly16 Group Title
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    |dw:1358735372324:dw|Can you solve for x? :o)

    • one year ago
  3. geerky42 Group Title
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    Actually, 2x-4 > -6

    • one year ago
  4. elegant11 Group Title
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    is x 5 and 1

    • one year ago
  5. geerky42 Group Title
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    None.

    • one year ago
  6. geerky42 Group Title
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    -6 < 2x – 4 < 6 Try to isolate x.

    • one year ago
  7. elegant11 Group Title
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    is –1 < x < 5 the answer?

    • one year ago
  8. geerky42 Group Title
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    Yes!

    • one year ago
  9. geerky42 Group Title
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    Is this clear?

    • one year ago
  10. elegant11 Group Title
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    yes...can you help me with another question?

    • one year ago
  11. geerky42 Group Title
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    Sure.

    • one year ago
  12. elegant11 Group Title
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    Describe the end behavior of f(x) = 2x^4 – 5x + 1.

    • one year ago
  13. elegant11 Group Title
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    do you understand the question?

    • one year ago
  14. geerky42 Group Title
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    Yeah, and you can quickly use my knowledge of end behavior. Just take a look at the leading term (2x⁴). We know that it is even function, which mean both ends are going at the same direction. Now, take a look at leading coefficient. It is positive so both ends are going up. Is this clear?

    • one year ago
  15. elegant11 Group Title
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    since there are two pairs does ++, -+ sound right?

    • one year ago
  16. geerky42 Group Title
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    Yeah, I guess.

    • one year ago
  17. elegant11 Group Title
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    well here are the other choices ++, -- +-, -+ +-, --

    • one year ago
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