1. Calculate the product of $47 \times 53$ by representing the numbers relative to 50. The result is ___.
2. Multiply the pair of conjugates using the Product of Conjugates Pattern: $(11k+4)(11k-4) = \_\_\_.$
3. Multiply the pair of conjugates using the Product of Conjugates Pattern: $(m+\frac{2}{3}n)(m-\frac{2}{3}n) = \_\_\_.$
4. Multiply the pair of conjugates using the Product of Conjugates Pattern: $(8j+4)(8j-4) = \_\_\_.$
5. Multiply the pair of conjugates using the Product of Conjugates Pattern: $(9c-2d)(9c+2d) = \_\_\_.$
6. Multiply the pair of conjugates using the Product of Conjugates Pattern: $(9c+5)(9c-5) = \_\_\_.$
7. Multiply the pair of conjugates using the Product of Conjugates Pattern: $(5k+6)(5k-6) = \_\_\_.$
8. Multiply the pair of conjugates using the Product of Conjugates Pattern: $(uv-12)(uv+12) = \_\_\_.$
9. Multiply the pair of conjugates using the Product of Conjugates Pattern: $(x+\frac{1}{4})(x-\frac{1}{4}) = \_\_\_.$
10. Multiply the pair of conjugates using the Product of Conjugates Pattern: $(ab-4)(ab+4) = \_\_\_.$