Need details explanation and calculation

Given the production function per hour Q(x, y) = -2x2 - 4y' + 40x + 40y, where x is a worker receiving $1 per hour and y is a worker receiving $2 per hour. The budget constraint is $410. What is the value of | H|? (given that your bordered hessian (or variable vector) is in the order of 1, x and y, respectively) O 12 O 24 O 36 O 48