### Home > A2C > Chapter 12 > Lesson 12.4.1 > Problem 12-163

12-163.

Use the pattern for (*a* + *b*)^{5} to write the fourth term of (*w* − 4*z*)^{5}Homework Help ✎

Using Pascal's Triangle, find the pattern for the 4th term of the 5th row.

10*a*^{2}*b*^{3}

Substitute *w* for *a* and −4*z* for *b* and simplify.

−640*w*^{2}*z*^{3}