What is the 8th term of the binomial expansion (x + y)10?
2 answers:
Answer:
120x^3y^7
We can use the Pascal's triangle to solve this question.
This pascal's triangle is shown in the Image below. To build the triangle, begin with the number 1 at the top, then continue placing numbers below it in a triangular pattern. In this way, each number are the numbers directly above added together. So, the expression is :
(x+y)10
After you do the steps you be left with:
120x^3y^7
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the "r" stands for radius which is half the diameter
So we do
Which gives us the answer of 314.16
Hope this helps!