Rozwiąż metodą graficzną układ równań
{x(x+2)-y=x²}
{(y- √5)(y+ √5)-2x=y²-y
x(x+2)-y=x²
(y-√5)(y+√5)-2x=y²-y
x²+2x-y=x²
y²+√5y-√5y-5-2x=y²-y
2x=y
-5-2x=-y
-y=-5-2x /*(-1)
y=5+2x
2x=5+2x
0=5
y=5+2*0= 5+0=5
x=0
y=5
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x(x+2)-y=x²
(y-√5)(y+√5)-2x=y²-y
x²+2x-y=x²
y²+√5y-√5y-5-2x=y²-y
2x=y
-5-2x=-y
2x=y
-y=-5-2x /*(-1)
2x=y
y=5+2x
2x=5+2x
y=5+2x
0=5
y=5+2*0= 5+0=5
x=0
y=5