Factorise : 2x3−3x2−17x+30
Using the remainder Theorem, factorise each of the following completely: (i) 3x3+2x2−19x+6 (ii)2x3+x2−13x+6 (iii) 3x3+2x2−23x−30 (iv) 4x3+7x2−36x−63 (v) x3+x2−4x−4.