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alex080297

Ответ:

x1=15 y1=22; x2=-22 y2=-15

Пошаговое объяснение:

x*y=330

y=x+7

x(x+7)=330

x^2+7x=330

x^2+7x-330=0

D=49-4*1*(-330)=1369

x1=(-7+37)/2=15

x2=(-7-37)/2=-22

y1=15+7=22

y2=-22+7=-15

Ответ: x1=15 y1=22; x1=-22 y=-15

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