Question

система уравнений !х+1! + !н-1!=5 !х+1!=4у-4 Помогите!!1

Answer 1

(х+1)+(у-1)=5,

(х+1)=4у-4,

Х+1≥0,

y-1≥0;

 

 

-(х+1)+(у-1)=5,

(х+1)=4у-4,

Х+1<0,

y-1≥0;

 

 

(х+1)-(у-1)=5,

(х+1)=4у-4,

Х+1≥0,

y-1<0;

 

-(х+1)-(у-1)=5,

-(х+1)=4у-4,

Х+1<0,

y-1<0;

 

х=5,

у=0;

х=-5,

у=0;

х=47/3

у=-32/3

х=-47/3

у=-32/3

 

Answer 2

решение во вложении

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92ba132709bbee07511ea33dd946ade4.doc

d14ec2601a071cdead590f54572f639e.doc