Question

Помогите решить систему!!
(х-1) (у-1)=2
х+у=5

Answer 1

(x-1)(y-1)=2
x+y=5

x=5-y

(5-y-1)(y-1)=2
(4-y)(y-1)=2
4y-4-y^2+y = 2
-y^2+5y-6=0
y^2-5y+6=0
д= 25 - 24= 1
y= (5-+1)/2= 3; 2

x=5-y
x=5-3
x=2

x=5-2
x=3
ответ y=3; 2 x=2;3
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