### Home > A2C > Chapter 13 > Lesson 13.1.4 > Problem 13-88

13-88.

What is the fifth term of each expansion? Homework Help ✎

(

*a*+*b*)^{9}(2

*x*+*y*)^{8}

Use the binomial theorem.

_{9}C_{5} · *a*^{5} · *b*^{9−5} = 126*a*^{5}*b*^{4}

See part (a).

13-88.

What is the fifth term of each expansion? Homework Help ✎

(

*a*+*b*)^{9}(2

*x*+*y*)^{8}

Use the binomial theorem.

_{9}C_{5} · *a*^{5} · *b*^{9−5} = 126*a*^{5}*b*^{4}

See part (a).