<Dd> f (x) = x 2 − 5 x + 6 (\ displaystyle f (x) = x ^ (2) - 5x + 6) </Dd> <P> has the two roots 2 (\ displaystyle 2) and 3 (\ displaystyle 3), since </P> <Dl> <Dd> f (2) = 2 2 − 5 ⋅ 2 + 6 = 0 and f (3) = 3 2 − 5 ⋅ 3 + 6 = 0 (\ displaystyle f (2) = 2 ^ (2) - 5 \ cdot 2 + 6 = 0 \ quad (\ textrm (and)) \ quad f (3) = 3 ^ (2) - 5 \ cdot 3 + 6 = 0). </Dd> </Dl> <Dd> f (2) = 2 2 − 5 ⋅ 2 + 6 = 0 and f (3) = 3 2 − 5 ⋅ 3 + 6 = 0 (\ displaystyle f (2) = 2 ^ (2) - 5 \ cdot 2 + 6 = 0 \ quad (\ textrm (and)) \ quad f (3) = 3 ^ (2) - 5 \ cdot 3 + 6 = 0). </Dd>

Another name for the x-intercept or solution of a function