Question

Factorise 2x^3
– x^2
– 16x + 15 using factor theorem.​

Answer 1

Answer:

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

= 2x^2(x-1) + x(x-1) - 15(x-1)

= (x-1)(2x^2 + x -15)

= (x-1)(2x2 +6x-5x-15)

= (x-1)(x+3)(2x-5)