Question

can someone teach me how to do these?? solve the nonlinear system of equations.
{x^2+y^2=144
{x^2-4y^2=64

Answer 1

How good are you at solving the linear versions of these?

Answer 2

{x^2+y^2=144|
{x^2-4y^2=64| *-1
----------------- +
5y^2=80
y^2=16
y=+-4
now substitute each of this values into some equation and find the corresponding x values

Answer 3

okay...thanks for your help myko!