Question

I need help with this problem.
x3+4x

Answer 1

Answer: x=0 x=2i x=-2i

if your factoring: x(x^2+4)

Explanation:

(if your solving for x)

`x^(3) +4x\\x(x^(2) +4)\\\\x=0\\\\x=(-b)/(2a)(+)/(-) (√(b^2-4ac))/(2a) \\\\x=(0)/(2)(+)/(-) (√(0^2-16))/(2) \\x={0}}(+)/(-) (√(-16))/(2) \\`

`x={0}}(+)/(-) (4i)/(2) \\\\\\x=(+)/(-)2i`