# For Problems 25-30, find the indicated term of the expansion. Seventh term of ( x + y ) 11

### Intermediate Algebra

10th Edition
Jerome E. Kaufmann + 1 other
Publisher: Cengage Learning
ISBN: 9781285195728

Chapter
Section

### Intermediate Algebra

10th Edition
Jerome E. Kaufmann + 1 other
Publisher: Cengage Learning
ISBN: 9781285195728
Chapter A, Problem 25PE
Textbook Problem
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## For Problems 25-30, find the indicated term of the expansion.Seventh term of ( x + y ) 11

To determine

To Find:

The seventh term of the expansion (x+y)11.

### Explanation of Solution

The binomial expansion for (x+y)n is

xn+nxn1y+n(n1)2!.xn2y2+n(n1)(n2)3!xn3y3+........+yn

The exponents of x begin with the exponent of 11 and decrease term by term by 1 until the last term becomes 1, i.e. the exponent of x is 0.

The exponents of y begin with 0 and increase term by term by 1 until the last term contains the power of 11.

But, here we need to find the seventh term of the expansion.

The seventh term will contain x5 and y6

Because the sum of the exponents of xandy must be 11

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