x^2+y^2=29
3x-7y=-29
7y-3x=29
y=29 +3x/7
x^2+(29+3x/7)^2 = 29
49x^2 + 841+ 174x+9x^2 = 1421
58x^2+174x-580=0
x^2+3x-10=0
D=9-4*1*-10=49
x1=-3+V49/2=2
x2=-3-V49/2=-5
y=29+6/7 =5
y = 29-15/7=2
ответ 2 5 2 5
1/x+1/y=3
1/x^2 - 1/y^2=6
1/x=3-(1/y)
(3-1/y)^2 - 1/y^2=6
(3y-1)/y^2-1/y^2=6
9y^2-6y+1-1=6y^2
3y^2-6y=0
3y(y-2) =0
y=0
y=2
x=2/5
x^2+y^2=29
3x-7y=-29
x^2+y^2=29
7y-3x=29
y=29 +3x/7
x^2+(29+3x/7)^2 = 29
49x^2 + 841+ 174x+9x^2 = 1421
58x^2+174x-580=0
x^2+3x-10=0
D=9-4*1*-10=49
x1=-3+V49/2=2
x2=-3-V49/2=-5
y=29+6/7 =5
y = 29-15/7=2
ответ 2 5 2 5
1/x+1/y=3
1/x^2 - 1/y^2=6
1/x=3-(1/y)
(3-1/y)^2 - 1/y^2=6
(3y-1)/y^2-1/y^2=6
9y^2-6y+1-1=6y^2
3y^2-6y=0
3y(y-2) =0
y=0
y=2
x=2/5