### Home > CCA2 > Chapter 10 > Lesson 10.3.1 > Problem 10-146

10-146.

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 4^{th} term of the 5^{th} row.

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

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

−640*w*^{2}*z*^{3}