Question

actorise using factor theorem:

(i)f (x) = 3x^3 - 3x^2 - 42x + 72​

Answer 1

Answer:

STEP

1

:

(3x2 - 42x) - 72 = 0

STEP

2

:

STEP

3

:

Pulling out like terms

3.1 Pull out like factors :

3x2 - 42x - 72 = 3 • (x2 - 14x - 24)

Trying to factor by splitting the middle term