Ответ:
X=8-y
(8-y).y=7 gy - y^2=7
y^2-8y +7=0 D=64-28=36 = 6^2
y1=(8+6):2=7 y2=(8-6): 2 =1
X1=8-7=1
X2=8-1=7
Ответ (1;7);(7:1)
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Ответ:
X=8-y
(8-y).y=7 gy - y^2=7
y^2-8y +7=0 D=64-28=36 = 6^2
y1=(8+6):2=7 y2=(8-6): 2 =1
X1=8-7=1
X2=8-1=7
Ответ (1;7);(7:1)