Question

- Factorise : 2x^3-3x^2-17x+30
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Answer 1

2x^3 - 3x^2 - 17x + 30

= 2x^3 + x^2 - 15x - 4x^2 - 2x + 30

= x(2x^2 + x - 15) - 2(2x^2 + x - 15)

= (x - 2) (2x^2 + x - 15)