Question 22131
Factor:
{{{x^4 + 7x^2 - 18}}}
{{{(x^2 - 2)(x^2 + 9)}}} This is as far as we can go for part 1.

Factor completely:
{{{x^4 + 7x^2 - 18}}}
{{{(x^2 - 2)(x^2 + 9)}}}
{{{(x + sqrt(2))(x - sqrt(2))(x + 3i)(x - 3i)}}}