Leysa {l}{x^3+5x^2+4x+20=0}{x=2i}{y=s}{z=y}{a=z}{b=a}{c=b}{text{Solvefor}dtext{where}}{d=c}

$$\left. \begin{array} { l } { x ^ {3} + 5 x ^ {2} + 4 x + 20 = 0 }\\ { x = 2 i }\\ { y = s }\\ { z = y }\\ { a = z }\\ { b = a }\\ { c = b }\\ { \text{Solve for } d \text{ where} } \\ { d = c } \end{array} \right.$$

Leystu fyrir x, y, s, z, a, b, c, d

$$x=2i$$

$$y=d$$

$$z=d$$

$$s=d$$

$$a=d$$

$$b=d$$

$$c=d$$

$$d\in \mathrm{C}$$