SOLUTION: Use the graph of f(x) to find the solutions to the equation f(x)=0. What are the solutions of the equation 2x^2=8? Use a graph of a related function whose roots answer the quest

Algebra ->  Quadratic Equations and Parabolas  -> Quadratic Equations Lessons  -> Quadratic Equation Lesson -> SOLUTION: Use the graph of f(x) to find the solutions to the equation f(x)=0. What are the solutions of the equation 2x^2=8? Use a graph of a related function whose roots answer the quest      Log On


   

Question 957633: Use the graph of f(x) to find the solutions to the equation f(x)=0.
What are the solutions of the equation 2x^2=8? Use a graph of a related function whose roots answer the question.
Answer by stanbon(75887) About Me  (Show Source):
You can put this solution on YOUR website!
Use the graph of f(x) to find the solutions to the equation f(x)=0.
What are the solutions of the equation 2x^2=8? Use a graph of a related function whose roots answer the question.
----
x^2 = 4
x^2-4 = 0
(x-2)(x+2) = 0
x = 2 or x = -2
-------
Graph y = 2x^2-8
graph%28400%2C400%2C-10%2C10%2C-10%2C10%2C2x%5E2-8%29
-------------
Cheers,
Stan H.
----------