SOLUTION: Find all solutions of the system of equations. y=4-x^2 y=x^2-4

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Question 695102: Find all solutions of the system of equations.
y=4-x^2
y=x^2-4
Answer by pmatei(79) About Me  (Show Source):
You can put this solution on YOUR website!
If you add the two equations you get:
2y=0
y=0
Replacing y into any of the original equations:
x%5E2-4=0
x%5E2=4
x=+2%29 or x=-2