Question

Solve this equation and list the solution: x^3+18x=0

Answer 1

Factor out the common term x

x(x^2 + 18) = 0

Solve for x; How?

Ask yourself: When will x(x^2 + 18) eqal zero?

When x = 0 or x^2 + 18 = 0

Solve each of the 2 equations above

Thus, x = 0, ±3√2i