Proszę o jak najszybsze rozwiązanie
x²+x(y-4)=-2 i y²+y(x-4)=-2
x²+xy-4x=-2 i y²+yx-4y=-2
-x²-xy+4x=2 i y²+xy-4y=-2
y²-x²=0
(x-y)(x+y)=0
x-y=0 lub x+y=0
x=y lub x=-y
dla x=y
x²+x(x-4)=-2
x²+x²-4x+2=0
2x²-4x+2=0
2(x²-2x+1)=0
2(x-1)²=0
x=1 i y=1
dla x=-y
y²+y(-y-4)=-2
y²-y²-4y=-2
4y=2
y=½ i x=-½
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x²+x(y-4)=-2 i y²+y(x-4)=-2
x²+xy-4x=-2 i y²+yx-4y=-2
-x²-xy+4x=2 i y²+xy-4y=-2
y²-x²=0
(x-y)(x+y)=0
x-y=0 lub x+y=0
x=y lub x=-y
dla x=y
x²+x(x-4)=-2
x²+x²-4x+2=0
2x²-4x+2=0
2(x²-2x+1)=0
2(x-1)²=0
x=1 i y=1
dla x=-y
y²+y(-y-4)=-2
y²-y²-4y=-2
4y=2
y=½ i x=-½