anonymous
  • anonymous
What is the fourth term in the expansion of (x + 2)7?
Mathematics
  • Stacey Warren - Expert brainly.com
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SOLVED
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schrodinger
  • schrodinger
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anonymous
  • anonymous
Plug in 4 for x and solve.
anonymous
  • anonymous
(x+2)^7 have you learned binomial theorem yet?
anonymous
  • anonymous
no its pascals triangle, i just need an answer. haha

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anonymous
  • anonymous
and yes, (x+2)^7
anonymous
  • anonymous
To my understanding the answer still lies in my answer. Plug in 4 for x and just do the simple math from there.
anonymous
  • anonymous
4+2= (6)^7?
anonymous
  • anonymous
Right
anonymous
  • anonymous
thats 1,679,616. thats not one of the options
anonymous
  • anonymous
Hmmm...Try this http://www.purplemath.com/modules/binomial2.htm Scroll down to the third bullet point.
amistre64
  • amistre64
plug in 4 for x? i dunno about that, sounds a bit off to me
amistre64
  • amistre64
trying to recall the "pattern" \[{{7}\choose{3}}x^4\ 2^3\]looks right to me

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