Question

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Answer 1

x=+2(y-1)

(2y-2)(2y-2+y)=8

(2y-2)(3y-2)=8

6y2-4y-6y+4=8

6y2-10y-4=0

3y2-5y-2=0

y=(5+-√25-4.3.-2)/6

y=(5+-7)/6

y=12/6

y=2

y=-2/6

y=-1/3

y=2

x=2(y-1)

x=2(2-1)

x=2.1=2

y=-1/3

x=2(-1/3-1)

x=2(-4/3)

x=-8/3

Respostas:

x=2, y=2. x=-8/3 y=-1/3