New operator definitions 1

Given the definition of a new operator, evaluate an expression that contains that operator.

Problem

The operation \dagger is defined as follows:
xy=x2+2y2x \dagger y = x^{2}+2y^{2}
Find 36-3 \dagger -6.
  • Your answer should be
  • an integer, like 6
  • a simplified proper fraction, like 3, slash, 5
  • a simplified improper fraction, like 7, slash, 4
  • a mixed number, like 1, space, 3, slash, 4
  • an exact decimal, like 0, point, 75
  • a multiple of pi, like 12, space, p, i or 2, slash, 3, space, p, i