Question

(ii) (x - 5)(2x - 1) (2x + 3)​

Answer 1

$(x - 5)(2x - 1)(2x + 3) \\ = (2{x}^{2} - x - 10x + 5)(2x + 3) \\ =( 2 {x}^{2} - 11x + 5)(2x + 3) \\ = 4 {x}^{3} - + 6{x}^{2} - 22 {x}^{2} - 33x + 10x + 15 \\ = 4 {x}^{3} - 16x ^{2} - 23x + 15$

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