SOLUTION: Find the x-intercepts. y = x^2 - 4x - 32

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Question 173630This question is from textbook Introductory Algebra
: Find the x-intercepts.
y = x^2 - 4x - 32 This question is from textbook Introductory Algebra

Found 2 solutions by vleith, jojo14344:
Answer by vleith(2983)   (Show Source): You can put this solution on YOUR website!

To find x-intecepts, set y=0


x = 8 and x = -4
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=144 is greater than zero. That means that there are two solutions: .




Quadratic expression can be factored:

Again, the answer is: 8, -4. Here's your graph:

See this URL for a tool to help you with this stuff
http://www.algebra.com/algebra/homework/quadratic/quadratic.solver
Answer by jojo14344(1513)   (Show Source): You can put this solution on YOUR website!


Continue solving by Quadratic Eqn:
where----->







See graph:

Thank you,
Jojo
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