Algebra-2

To find the coefficient of the term containing u² in the expansion of (u-3) ⁵, we can use the binomial theorem. The binomial coefficients for the expansion are determined by the fifth row of Pascal's Triangle: 1, 5, 10, 10, 5, 1. These coefficients represent the number of ways each term can be obtained by combining the powers of u and 3.

The expanded form can be written as:

u⁵