Pascal's triangle and binomial expansion

Build fluency with Pascal’s triangle and the finite binomial theorem. This precalculus practice set connects coefficient patterns to combinations, then develops expansions with positive terms, negative terms, and numerical factors. Single-select and multiselect questions include conceptual explanations, algebraic calculations, and error diagnosis. Worked solutions show how coefficients and powers interact and how substitution can detect a faulty expansion. The scope is nonnegative integer powers; generalized infinite binomial series are outside this set.