SOLUTION: find the common solutions algebraically y=x^2-4 and y=3x

SOLUTION: find the common solutions algebraically y=x^2-4 and y=3x

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Question 696247: find the common solutions algebraically y=x^2-4 and y=3x

Answer by checkley79(3341) (Show Source): You can put this solution on YOUR website!
y=x^2-4 and y=3x
3x=x^2-4
x^2-3x-4=0
(x-4)(x+1)=0
x-4=0
x=4 ans.
x+1=0
x=-1 ans.
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