SOLUTION: how do you solve x^2+2=6 by graphing the related function?

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Question 171861: how do you solve x^2+2=6 by graphing the related function?
Answer by jim_thompson5910(35256) About Me  (Show Source):
You can put this solution on YOUR website!
x%5E2%2B2=6 Start with the given equation


x%5E2%2B2-6=0 Subtract 6 from both sides.


x%5E2-4=0 Combine like terms.


Now let's graph y=x%5E2-4


Graph of y=x%5E2-4

Now by looking at the graph, we see that the graph intersects with the x-axis at x=-2 and x=2


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Answer:


So the solutions are x=-2 or x=2