2. Show that (3x 1)(x + 5)(4x 3) = 12x³ + 47x² 62x + 15 − − − for all values of x. ........................................................... for question is 3 marks) 3. Show that (x - 3)(2x + 1)(x + 3) = 2x³ + x² 18x - 9 − for all values of x. ........................................................... for question is 3 marks) 4. (2x + 1)(x + 6)(x - 4) = 2x³ + ax² + bx 24 – for all values of x, where a and b are integers. Calculate the values of a and b.
2. Show that (3x − 1)(x + 5)(4x − 3) = 12x³ + 47x² − 62x + 15 for all values of x. ........................................................... for question is 3 marks) 3. Show that (x - 3)(2x + 1)(x + 3) = 2x³ + x² − 18x - 9 for all values of x. ........................................................... for question is 3 marks) 4. (2x + 1)(x + 6)(x - 4) = 2x³ + ax² + bx – 24 for all values of x, where a and b are integers. Calculate the values of a and b.
Revision_Guide_Aiming_for_Grade_9.docx