3. (a) Solve the real solution for following equations: N2 1 (1) ; =3+ ) (i) 11(6%) + 3(9%)(4%) =4 ; (iii) 322=+3-=x. (b) Find the values of the constants p and so that p? and are the roots of the equation 2+ pr+q=0. (c) It is given that the roots of 2% + pz? + gz +7 = 0 are o, 3 and 7 . (i) Show that a? + pa + ( ) = 0. (ii) If the roots of 3+ Az?2 + Bz + C = 0 are By oz2,'yoz 3% and off 72, show that A :p2 3q, B= 3q2 p2q and C = p3r - q3. (15 points)