Question

Розвяжіть систему рівнянь

519e14ac0723aa3b4ebc956624550835.docx

Answer 1

Ответ:

1) x=5-y

xy=4

(5-y)y=4

y=1

y=4

x=5-1

x=5-4

x=4

x=1

x1y1= 4;1

x2y2= 1;4

4=1=5

4*1=4

1+4=5

1*4=4

x1y1=4;1

x2y2=1;4

2) x=7+y

xy=18

(7+y)*y=18

y=-9

y=2

x=7-9

x=7+2

x=-2

x=9

x1y1= -2;-9

x2y2=9;2

-2+9=7

-2*(-9)=18

9-2=7

9*2=18

x1y1=-2;-9

x2y2=9;2

3)x^2+y^2=10

y=-3/x

x^2+(-3/x)^2=10

x=-1

x=1

x=-3

x=3

-1y=-3

1y=-3

-3y=-3

3y=-3

y=3

y=-3

y=1

y=-1

x1y1= -1;3

x2y2= 1;-3

x3y3=-3;1

x4y4=3;-1

(-1)^2+3^2=10

-1*3=-3

1^2+(-3)^2=10

1*(-3)=-3

(-3)^2=1^2=10

-3*1=-3

3^2+(-1)^2=10

3*(-1)=-3

x1y1=-1;3

x2y2=1;-3

x3y3=-3;1

x4y4=3;-1

4)x^2+y^2=34

y=15/x

x^2+(15/x)^2=34

x=-3

x=3

x=-5

x=5

-3y=15

3y=15

-5y-15

5y=15

y-5

y=5

y=-3

y=3

x1y1=-3;-5

x2y2=3;5

x3y3=-5;-3

x4y4=5;3

(-3)^2+(-5)^2=34

-3*(-5)=15

3^2+5^2=34

3*5=15

(-5)^2+(-3)^2=34

-5*(-3)=15

5^2+3^2=34

5*3=15

x1y1=-3;-5

x2y2=3;5

x3y3=-5;-3

x4y4=5;3

5) x^2+y^2=50

y=-7/x

x^2+(-7/x)^2=50

x=-1

x=1

x=-7

x=7

-1y=-7

1y=-7

-7y=-7

7y==7

y=7

y=-7

y=1

y=-1

x1y1 -1:7

x2y2=1;-7

x3y3=-7;1

x4y4=7;-1

(-1)^2+7^2=50

-1*7=-7

1^2+(-7)^2=50

1*(-7)=-7

(-7)^2+1^2=50

-1*1=-7

(-7)^2+1^2=50

-7*1=-7

7^2+(-1)^2=50

7*9-1)=-7

x1y1=-1;7

x2y2=1;-7

x3y3=-1;1

x4y4=7;-1

6)4x^2+y^2=29

y=5/x

4x^2+(5/x)^2=29

x=-1

x=1

x=-5/2

x=5/2

-1y=5

1y=5

-5/2y=5

5/2y=5

y=-5

y=5

y=-2

y=2

x1y1=-1;-5

x2y2=1;5

x3y3=-5/2;-2

x4y4=5/2;2

5*(-1)^2+(-5)^2=29

-1*(-5)=5

4*1^2+5^2=29

1*5=5

4*(-5/2)^2+(-2)^2=29

-5/2*(-2)=5

4*(5/2)^2+2^2=29

5/2*2=5

x1y1=-1;-5

x2y2=1;5

x3y3=-5/2;-2

x4y4=5/2;2

Объяснение: