SOLUTION: a^2+k^2=j^2 Solve for a When I do this problem I get two solutions. The answer only gives a choice of one. Could someone please help me. I'm confused. Thank You

Algebra ->  Quadratic Equations and Parabolas -> SOLUTION: a^2+k^2=j^2 Solve for a When I do this problem I get two solutions. The answer only gives a choice of one. Could someone please help me. I'm confused. Thank You      Log On


   

Question 563723: a^2+k^2=j^2
Solve for a
When I do this problem I get two solutions. The answer only gives a choice of one. Could someone please help me. I'm confused. Thank You
Answer by Tatiana_Stebko(1539) About Me  (Show Source):
You can put this solution on YOUR website!
This problem really has 2 solutions
a=sqrt%28j%5E2-k%5E2%29 and a=-sqrt%28j%5E2-k%5E2%29
Perhaps in this problem a, k, j are positive real numbers, in this case only a=sqrt%28j%5E2-k%5E2%29 is a solution