Question

There is a narrow rectangular plot reserved for a school in a small village. The length and breadth of the plot are (x +5) and (x -5).
1) Find the area of the plot?
2) What is the perimeter of the plot?
3) If area of another plot is p 2 -10p + 21,what are its length and breadth?
4) In the question number 1 if length is increased by 3 and breadth is decreased by 2 what is the area of the plot?
5) Which identity was used to calculate area in the question number 4 ?​

Answer 1

Answer:

$5 \gamma 5 {8}^{25} {4}^{5} \sqrt[1]{?8}$