SOLUTION: Solve: x^2 + y^2 = 25 3x^2 + 3y^2 + x = 79 The correct answers are (4,3) and (4,-3), I can't figure out how to get them and I need to show my work. Please help me!

Algebra ->  Systems-of-equations -> SOLUTION: Solve: x^2 + y^2 = 25 3x^2 + 3y^2 + x = 79 The correct answers are (4,3) and (4,-3), I can't figure out how to get them and I need to show my work. Please help me!      Log On


   

Question 600959: Solve:
x^2 + y^2 = 25
3x^2 + 3y^2 + x = 79

The correct answers are (4,3) and (4,-3), I can't figure out how to get them and I need to show my work. Please help me!
Answer by Alan3354(69443) About Me  (Show Source):
You can put this solution on YOUR website!
Solve:
x^2 + y^2 = 25
3x^2 + 3y^2 + x = 79
3x^2 + 3y^2 = 75 ---------- Eqn 1 x 3
----------------- Subtract
x = 4
-----
Easier than you'd expect.