Find all solutions of the systems of equations below using any method. x²+y²=1 ; x²+y²=4

There´s no solution to this system

Step-by-step explanation:

We have

So by using any method we will eliminate both variables, for example by using elimination method.

We will multiply the first equation by (-)

so we have

Plotting the two equations we will have two circles so now its obvious that we don´t have any solution because we don´t have any intersection