One root of the quadratic equation x2 - 5 x + 6 = 0 is 3. Find the other root.

The given equation is
x² - 5x + 6 = 0 ⇒ x ² - 2x - 3x+ 6 = 0
⇒ x( x - 2 ) - 3( x - 2 ) = 0
⇒ ( x - 2 ) ( x - 3 ) = 0
⇒ x - 2 = 0 or x - 3 = 0
⇒ x = 2 or x = 3
Thus, the other root of the given quadratic equation is 2.