Question 1 - A-Level Maths

(i) Calculate the discriminant of $2 x ^ { 2 } + 8 x + 8$.
(ii) State the number of real roots of the equation $2 x ^ { 2 } + 8 x + 8 = 0$.
Find the set of values of $x$ for which

$$( x - 1 ) ( x - 2 ) < 20 .$$