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Ответ:Объяснение: почленно поделим второе уравнение на 2 подставим 1 во 2 ответ (-1; -3) ; ( -1: 3) ; ( 1; -3) ; ( 1: 3)

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vlad210106

Ответ:

Объяснение:

$\left \{ {{x^2-y^2=8} \atop {2x^2+2y^2=20}} \right.$ почленно поделим второе уравнение на 2

${x^2=y^2+8} \atop {x^2+y^2=10}} \right.$ подставим 1 во 2

$y^{2} +8+y^2=10\\2y^2=2\\y^2=1 ;$ $\left \{ {{y_1=1} \atop {y_2=-1}} \right.$

$x^2= y^2+8\\ x_1^2=1^2+8=9 \\x_2^2=(-1)^2+8=9$ $\left \{ {{x_1=+-3} \atop {x_2=+-3} \right.$

ответ (-1; -3) ; ( -1: 3) ; ( 1; -3) ; ( 1: 3)

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pomogite pzhzhzhzhzhzhzhzhzhzha787fd388cb7d4b105f39bdcb3e5734a 74471

gosudarstvo eto aforma organizacii vlasti raspolagayushayasya na opredelennoj terr

vyberi termin kotoryj yavlyaetsya obshim dlya vseh ostalnyh iz predstavlennogo nizhe5bc18c1592dff64b821ca5e9c08a4cad 91999

u roditelej odin iz kotoryh albinos a vtoroj imeet normalnuyu pigmentaciyu kozh

u cheloveka vesnushki dominiruyut nad ih otsutstviem opredeli veroyatnost rozhdd07a7d43da95ef46cb8c4de02857c2ae 73500

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