Question

Need help with solving a system of equations.

Answer 1

\[x ^{2} + y ^{2} = 4\] \[y ^{2}- x = 4 \]

Answer 2

no

Answer 3

How about this
solve for y^2 in the 2nd equation: y^2= x+4

use that definition of y in the first equation
\[ x^2 + y^2 = 4\\
x^2 + x+4 = 4\]
can you finish ?

Answer 4

yeah i think so

Answer 5

\[x ^{2} + x =0\] then factor to \[x(x+1)\]

Answer 6

yes, so x=0 or x= -1
then solve for the correspond y values