SOLUTION: Solve the system: x^2 +y^2 =289 2x^2 -y^2 =143 The solutions will have the form (+-a, +- sqrt b) What is b? A. 17 B. 145 C. 3 D. -37 E. none of these

Algebra ->  Rational-functions -> SOLUTION: Solve the system: x^2 +y^2 =289 2x^2 -y^2 =143 The solutions will have the form (+-a, +- sqrt b) What is b? A. 17 B. 145 C. 3 D. -37 E. none of these      Log On


   

Question 936741: Solve the system:
x^2 +y^2 =289
2x^2 -y^2 =143
The solutions will have the form (+-a, +- sqrt b) What is b?
A. 17
B. 145
C. 3
D. -37
E. none of these
Found 2 solutions by oscargut, ewatrrr:
Answer by oscargut(2103) About Me  (Show Source):
You can put this solution on YOUR website!
Answer: b)
If you need more help or details you can contact me at:
mthman@gmail.com
Thanks

Answer by ewatrrr(24785) About Me  (Show Source):
You can put this solution on YOUR website!
x^2 +y^2 =289
2x^2 -y^2 =143
3x^2 = 432
x^2 = 144
x = ± 12