Question 671880
f(x) = x^3+10x


0 = x^3+10x


x^3+10x = 0


x(x^2+10) = 0


x = 0 or x^2+10 = 0


x = 0 or x^2 = -10


x = 0 or x = +-sqrt(-10)


x = 0, x = i*sqrt(10) or x = -i*sqrt(10)


So the three solutions are x = 0, x = i*sqrt(10) or x = -i*sqrt(10)