please help solve this x^2+y^2=25 -2+y=3

http://www.wolframalpha.com/input/?i=x%5E2%2By%5E2%3D25%3B++-2%2By%3D3

Wolfram|alpha says the answer is (0,5)

x^2+y^2=25 (1)

-2+y=3       so    y=3+2=5   (2)

sub 2 into 1 and you will get x=0

x^2 + y^2 = 25 -2 + y =3

25 - 2 +y = 3

23 + y =3

y   =3 -23

y   = - 20

x^2 +y^2 =3

x^2  +(-20)^2 = 3

x^2 +400 =3

x^2 =3-400

x^2  =-397

x      = -397

x =square root of (-397)

we can solve this by using the science calculator.

so thath answer is 19.9248588452