Find the result of the addition of the polynomials 12x(4y – 16y2) and (34y – 22) (12y + x2).

Some rules to remember while multiplying algebraic expression are:
- The product of two factors with the same signs will be positive, and the outcome of multiplying two terms with two, unlike signs, will be negative.
- If x is variable and a, b are positive integers then, (xa * xb) = x(m +n)