Use mathematical symbols to translate each of the following phrases. Represent the unspecified number by a variable x.

1. The square of a number added to the difference of a and b.
2. Half of a number subtracted from ⅔.
3. The cube of the sum of 12 and a number.
4. Perimeter (P) of a rectangle is twice the length (l) plus twice the width (w).
5. Area of trapezoid (A) is equal to half the sum of its 2 bases (b1 and b2) times height (h).
6. The third consecutive integer less than twice the first integer.
7. Age of Kim (x) last year.
8. Twice the age of Kim (x) 3 years from now.

Translate the following mathematical expressions into phrases.
9. abc + 2
10. (p - q)^2