Question

Factories the given question:

a) x³-13x-12​

Answer 1

Answer:

The answer is (x+1)(x-4)(x+3)

Step-by-step explanation:

x³-13x-12

=x³+x²-x²-x-12x-12

= x²(x+1)-x(x+1)-12(x+1)

= (x+1)(x²-x-12)

= (x+1)(x²-4x+3x-12)

= (x+1){x(x-4)+3(x-4)}

= (x+1)(x-4)(x+3)