Given the parabola f(x)= x2-2x-3 complete parts (1) through (3) below. Find the vertex by averaging the x-intercepts.Find the vertex by completing the square.Find the vertex of f(x)= x2+5x+2 using your method of choice.What are the domain and range for f(x)=x2+5x+2?

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Given the parabola f(x)= x2-2x-3 complete parts (1) through (3) below.

1. Find the vertex by averaging the x-intercepts.

2. Find the vertex by completing the square.

3. Find the vertex of f(x)= x2+5x+2 using your method of choice.

4. What are the domain and range for f(x)=x2+5x+2?

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Step 1
1. Obtain the vertex by averaging the x-intercept.

Equate f (x) to 0 and obtain the x-intercepts.

Step 2

Consider p = 3 and q = –1 and the vertex can be obtaining by axis of symmetry.

Step 3
1. Find the vertex by completing the ...

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