(a)Using a ruler and a pair of compasses only,
(i)construct triangle ABC with sides |AB|=7cm, |BC|=8cm and |AC|=9cm;
(ii)draw the perpendicular bisectors of the three sides;
(iii)locate the point of the intersection, O, of the perpendicular bisectors;
(iv)With centre O and radius OA, draw a circle to pass through the vertices of the triangle.

(b)Measure and write down the radius of the circle you have drawn in (a)(iv)

(c)Find the product of (2x – 3) and (x – 1)