x2 +y2 =4 please help I need to show work

Answer:
x=(2,0), (-2,0)
y=(0,2), (0,-2)
Step-by-step explanation:
To find the x-intercept, substitute in 0 for y and solve for x . To find the y-intercept, substitute in 0 for x and solve for y . x-intercept(s): ( 2 , 0 ) , ( − 2 , 0 ) y-intercept(s): ( 0 , 2 ) , ( 0 , − 2 )