Binomial Expansion with Pascal’s Triangle: Exercise

For AQA Level 2 Further Maths: rows of Pascal’s triangle, expanding (a + b)n with the coefficients from the triangle (no nCr), one coefficient, the term independent of x, unknowns, expanding and simplifying, surds and exact values · eleven levels, timed, full worked solutions

Every coefficient comes from the row of Pascal’s triangle that starts 1, n: each number is the sum of the two above it.
00:00