anonymous
  • anonymous
Use Pascal's triangle and the pattern of decreasing powers of a and increasing powers of b to expand (3x + 2Y)^5. I am unsure of how they want me to use Pascal's triangle with the coefficents.
Mathematics
chestercat
  • chestercat
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anonymous
  • anonymous
Do you know what the pascals triange is?
anonymous
  • anonymous
yes itis 1 1 1 1 2 1 1 3 3 1 1 4 6 4 1 1 5 10 10 5 1 and so on for infinty
anonymous
  • anonymous
Yes

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anonymous
  • anonymous
I dont understand how to get the coefficents of the expanded form using just pascal's triangle
anonymous
  • anonymous
Now do you know that they are the "combinations"
anonymous
  • anonymous
I can get each one using the general term formula but it says to use pascal's triangle
anonymous
  • anonymous
yes I know that The coefficent is the number of ways for that spefic combination
anonymous
  • anonymous
See each line gives you all the coefficients of the nCn for their respective number of terms
anonymous
  • anonymous
yea now how do i change that with the coefficents infront of the variable without using the general term formula
anonymous
  • anonymous
Read this http://www.krysstal.com/binomial.html
anonymous
  • anonymous
k give me a sec
anonymous
  • anonymous
okay so just add the descending and ascending a and b values to the row of pascal's triangle?

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