Question

How to factor x^4-x^2-6=0

Answer 1

(x² + 2) (x² - 3)

Explanation:

x⁴ - x² - 6

x⁴- 3x² + 2x² - 6

x² (x² - 3) + 2(x² - 3)

(x² + 2) (x² - 3)