Question

The graph of y=x^2 - 2x- 3 is shown above. What are the zeros and factors of y=x^2 - 2x -3

Answer 1

Answer:

$\boxed{x = -1, \ x = 3 \ \ ( x+1) (x-3)}$

Step-by-step explanation:

Zeros of the function:

The zeros of a function is when the y value is 0 or where the function crosses the x-axis.

The function crosses the x-axis at x = -1 and x = 3.

Factors of the function:

$y=x^2 - 2x- 3$

Factor the right side.

$y=x^2 +1x-3x- 3$

$y=x(x +1) -3(x+1)$

Take (x + 1) common.

$y=(x+1)(x-3)$

The factors are (x + 1) and (x - 3).

Answer 2

Answer:

zeros -1,3  and the factors ( x+1) (x-3)

Step-by-step explanation:

The zeros are where it crosses the x axis

It crosses at x=-1 and x=3

So the factors are ( x- -1) and ( x-3)

                                ( x+1) (x-3)