Let x be the number of children and t, the number of adults.
x + y =153
5.2x + 8.4y = 1013.2
Solving those equation will give:
x = 85 tickets sold to the kids ( and 68 tickets for adults)
To complete the square you need to halve the linear coefficient -4/2, square it, 4, and add that value, giving you:
x^2-4x+4 and that is a perfect square equal to:
(x-2)^2
Answer:
Who is Coraline? ~Ciel Phantomhive
