SOLUTION: Find the vertex and intercepts of the function f (x) = x2 + x − 2

Question 471514: Find the vertex and intercepts of the function f (x) = x2 + x − 2
Answer by jorel1380(3719) (Show Source): You can put this solution on YOUR website!
x2+x-2=0
(x+2)(x-1)=0
x=-2 or 1

Solved by pluggable solver: SOLVE quadratic equation with variable

Quadratic equation (in our case ) has the following solutons:

For these solutions to exist, the discriminant should not be a negative number.

First, we need to compute the discriminant : .

Discriminant d=9 is greater than zero. That means that there are two solutions: .

Quadratic expression can be factored:

Again, the answer is: 1, -2. Here's your graph:

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SOLUTION: Find the vertex and intercepts of the function f (x) = x2 + x &#8722; 2

SOLUTION: Find the vertex and intercepts of the function f (x) = x2 + x − 2