z=2i-2+2*(-1-3i)-3*(2-2i-1-3i)
6x=2x+16
z=2-2i-2-6i-3-15i
f(t)=(cost,sent,3t) is parametric
f(t)=(cost,sent,3t)
x^3+3x^2-10x-24
x^3-3x+2
x^3+2x^2-5x-6=
x^3-7x+6=
