SOLUTION: Solve the system. x^2+y^2=1 and x+y=-1
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Question 970330: Solve the system. x^2+y^2=1 and x+y=-1
Found 2 solutions by josgarithmetic, Boreal:
Answer by josgarithmetic(39617) (Show Source): You can put this solution on YOUR website!
;
or .
Resulting points would be (0,-1) and (-1,0).
Answer by Boreal(15235) (Show Source): You can put this solution on YOUR website!
x^2+y^2=1 Domain is [-1,1} Range is [-1,1]
x+y=-1; y=-x-1; y^2=x^2+2x+1
x^2+x^2+2x+1=1
2x^2+2x=0
divide by 2
x^2 + x=0
x(x+1)=0
x=0, -1
Points are (-1.0) and (0.-1)
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