x³ - 1, x³ + 1, x⁴ + x² + 1 এর ল.সা.গু কত?

x³ - 1
= (x - 1)(x² + x + 1)

x³ + 1
= (x + 1)(x² - x + 1)

x⁴ + x² + 1
= (x² + x + 1)(x² - x + 1)

∴ ল.সা.গু = (x + 1) (x - 1) (x² + x + 1) (x² - x + 1)
= (x³ + 1) (x³ - 1)
= x⁶ - 1