One equation with two unknowns usually does not have a solution.
Wiki User
∙ 2011-01-16 16:45:41It is x = -5
IMPOSSIBLE
No.
y2=x3+3x2
No, it is not.
(xn+2-1)/(x2-1)
X3 - 4 = 2 X3 = 6 X = 61/3 X = about 1.817
x3 + 2x2 - 8x + 5 = 0 x(2x - 8) + 5 = 0
If: x3+1 = 65 Then: x3 = 65-1 And: x3 = 64 So: x = 4 by means of the cube root function on the calculator
Realising that 125 is a perfect cube, this is actually pretty easy: x3 + 125 = 0 x3 = -125 x = -5
Since that isn't an equation, there is really nothing to solve.
It has two complex roots.