Example 17 (ii) - Chapter 2 Class 9 Polynomials

Last updated at July 19, 2026 by

Example 17 (ii) - Write the cubes in expanded form: (5p - 3q)^3 - Examples

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Example 22 Write the following cubes in the expanded form: (ii) (5p – 3q)3 (5p – 3q)3 Using (x – y)3 = x3 – y3 – 3xy(x – y) Where x = 5p & y = 3q = (5p)3 – (3q)3 – 3(5p)(3q)(5p – 3q) = 125p3 – 27q3 – 3(5p)(3q)(5p) -3(5p)(3q) (– 3q) = 125p3 – 27q3 – 225p2q + 135pq2

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