The following expressions are the areas of rectangles. Find the possible lengths and breadths of these rectangles.
 
1. \(x^2−7x+10\)
 
2. \(x^2+19x−20\)
Answer variants:
\((x+20)(x+1)\)
\((x−5)(x−2)\)
\((x+5)(x+2)\)
\((x+20)(x−1)\)