We cannot answer since you didn't give any numbers at all to solve this with.
k = 0.1
They are +/- 5*sqrt(2)
It is (-0.3, 0.1)
y = 3x + 2x^2 + k where k is any number
4y
2
k = x y x = k/y
a = 3 and y = 0
It works out that k must be greater than -11 or k must equal -11
x = y/k: 24 = 6/k so k = ¼; when y = 8, x = 8/¼ = 32
If: y = 3x +1 then y^2 = 9x^2 +6x +1 If: y^2 +x^2 = k then y^2 = k -x^2 So: 9x^2 +6x +1 = k -x^2 Transposing terms: 10x^2 +6x +(1 -k) = 0 Using the discriminant: 6^2 -4*10*(1 -k) = 0 Solving the discriminant: k = 1/10
x = y = 0 ?