1) Coefficient of x² in expansion of (2 + x)² 3) Coefficient

Last updated: 8/11/2022

1) Coefficient of x² in expansion of (2 + x)² 3) Coefficient of x in expansion of (x+3)³ 5) Coefficient of x'y in expansion of (x-3y)³ Coefficient of a²b² in expansion of (a-b)*