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anonymous

  • 4 years ago

What is the fourth term in the expansion of (x + 2)7?

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  1. anonymous
    • 4 years ago
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    Plug in 4 for x and solve.

  2. anonymous
    • 4 years ago
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    (x+2)^7 have you learned binomial theorem yet?

  3. anonymous
    • 4 years ago
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    no its pascals triangle, i just need an answer. haha

  4. anonymous
    • 4 years ago
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    and yes, (x+2)^7

  5. anonymous
    • 4 years ago
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    To my understanding the answer still lies in my answer. Plug in 4 for x and just do the simple math from there.

  6. anonymous
    • 4 years ago
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    4+2= (6)^7?

  7. anonymous
    • 4 years ago
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    Right

  8. anonymous
    • 4 years ago
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    thats 1,679,616. thats not one of the options

  9. anonymous
    • 4 years ago
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    Hmmm...Try this http://www.purplemath.com/modules/binomial2.htm Scroll down to the third bullet point.

  10. amistre64
    • 4 years ago
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    plug in 4 for x? i dunno about that, sounds a bit off to me

  11. amistre64
    • 4 years ago
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    trying to recall the "pattern" \[{{7}\choose{3}}x^4\ 2^3\]looks right to me

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