NCERT Ex 2.4 Q6 - Polynomials

Question: Write the following cubes in expanded form: (i) (2x + 1)^3 (ii) (2a - 3b)^3 (iii) (3/2 x + 1)^3 (iv) (x - 2/3 y)^3

Answer: (i) 8x^3+12x^2+6x+1, (ii) 8a^3-36a^2b+54ab^2-27b^3, (iii) 27/8 x^3+27/4 x^2+9/2 x+1, (iv) x^3-2x^2y+4/3 xy^2-8/27 y^3

Full step-by-step NCERT solution with diagrams on Something by Zero.

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