Question

If a,b,c,d are in continued proportion,prove that:(in the above image)ii)(a²-b²) (c²-d²)=(b²-c²)²

Answer 1

Answer:

It is very simple, in my case ans is 144.

Step-by-step explanation:

since they are continued proportion, so assume that a:b=1:2 and b:c = 2:4 and c:d = 4:8, so we get a=1 b=2 c=4 and d=8.

Now put these values in given equation, you will LHS=RHS.