Quadratic Equations

Question

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 1

Jas,

 

I can't, obviously, see your graph but I am not sure if one is needed to solve for x:2x²=8. Divide both sides by 2 and you will have x²=4. Now take the square root of both sides and you have x=-2 or x=2.