Plz someone solve . Thanks

Mr and mrs smith buy tickets for themselves and their four children. the cost of an adult ticket is ? 6 more than the adult ticket. the total cost of the six tickets is ? 40.50 work out the cost of an adult ticket. in your working let c be the cost of the child ticket and a be the cost of the adult ticket.

If f(x) =3x-2 and g(x) =2x+1 fins (f+ g) (x)

Place the following steps in order to complete the square and solve the quadratic equation,