–( y – 3)x – 3y 2. factorise by splitting the middle term: (i) 4x 2 –12x + 9 = 0. (ii) 4x 2 –4ax + (a 2 –b 2 ) = 0. 3. factorise the polynomial: z 2 –3z – 28 using the factor theorem. learn more about polynomials and factorisation by downloading byju’...