X - y=11 x² + y²=173

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Ariath

5 год назад

X - y=11 x² + y²=173

ОТВЕТЫ

Roza

Nov 5, 2020

Объяснение:

$\left \{ {x-y=11} \atop {x^2+y^2=173}} \right. \ \ \ \ \left \{ {{y=x-11} \atop {x^2+(x-11)^2=173}} \right. \ \ \ \ \left \{ {{y=x-11} \atop {x^2+x^2-22x+121=173}} \right.\ \ \ \ \left \{ {{y=x-11} \atop {2x^2-22x-52=0\ |:2}} \right. \\\left \{ {{y=x-11} \atop {x^2-11x-26=0}} \right.\ \ \ \ \left \{ {{y=x-11} \atop {D=225}\ \ \sqrt{D}=15 } \right.\ \ \ \ \left \{ {{y_1=2\ \ y_2=-13} \atop {x_1=13\ \ x_2=-2}} \right..$

: (13;2), (-2;-13).

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X - y=11 x² + y²=173​

X - y=11 x² + y²=173