Question

The trinomial x2 – 3x – 4 is represented by the model. What are the factors of the trinomial? (x + 1) and (x – 4) (x + 4) and (x – 1) (x + 5) and (x – 4) (x + 4) and (x – 5)

Answer 1

the answer would (x-4) and (x+1)

Answer 2

(x + 1) and (x – 4)

Explanation:

The given trinomial is m

`x^2-3x-4`

Split the middle term;

`x^2-4x+x-4`

Factor by grouping;

x(x-4)+1(x-4)

(x+1)(x-4)

The factors are

(x + 1) and (x – 4)