Find the L.C.M of the following expressions.
1. 2x³ + 2x² - 12x , 6x³ - 6x² - 72x , 4x³ - 24x² + 32x

2. x³ - 2x²y + 2xy² - y³ , x⁴ - y⁴ , x³ + y³

Irrelevant / Random answers will be reported! :) ​