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kakasveta [241]
4 years ago
11

Y = (-X)(-X) + 2 X + 4 X + Y = 4

Mathematics
1 answer:
andrey2020 [161]4 years ago
6 0
y=(-x)(-x)+2x+4\\
x+y=4\\\\
y=x^2+2x+4\\
y=-x+4\\\\
-x+4=x^2+2x+4\\
x^2+3x=0\\
x(x+3)=0\\
x=0 \vee x=-3\\\\
y=-0+4 \vee y=-(-3)+4\\
y=4 \vee y=7\\\\
x=0,y=4\\
x=-3,y=7
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