Question

The factorization of x2 + 3x – 4 is modeled with algebra tiles. What are the factors of x2 + 3x – 4? (x + 4) and (x – 4) (x + 3) and (x – 4) (x + 4) and (x – 1) (x + 3) and (x – 1)

Answer 1

This is a quadratic equation.

x² + 3x - 4 = 0

To factorize this we need to find the roots first.

The roots are :

-1 and 4

Now completing the quadratic formula using the roots we have :

x² + 4x - x - 4 = 0

Collecting the like terms together and factorizing:

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

= (x + 4) (x - 1)

The answer is thus :

(x + 4) and (x - 1)

Answer 2

Answer:(x + 4) (x - 1)

Explanation: edge 22