Question

120sq_20sq=25p Find the value of p​

Answer 1

120×120-20×20=25p

14400-400=25p

14000=25p

p=140×4

=560

Answer 2

120²-20²=25p

(a+b)(a-b)=a²-b²

(120+20)(120-20)=25p

140×100=25p

25p=14000

p=14000/25

p=560