Question

factorise x raised to 3- 5x square- p x+24

Answer 1

Let P(x)=x  

3

−5x  

2

−2x+24

We know P(−2)=0

Thus, x+2 is a factor

The other factor is x  

2

−7x+12

=x  

2

+4x+3x+12

=(x−3)(x−4)

Thus, x  

3

−5x  

2

−2x+24=(x+2)(x−3)(x−4)