Question

(a-b-c-d)-(d-a-b+2c)​

Answer 1

Answer:

Please

Step-by-step explanation:

Please write full information about this sum.

Answer 2

Answer:

this is your answer

I can't understand your question but I think you ask this question.

Step-by-step explanation:

If a,b,c,d are in a G.P. , ...

If a,b,c,d are in a G.P., then show that (a−d) 2 =(b−c) 2 +(c−a) 2+(d−b) 2

ANSWER

R.H.S=(b−c) 2+(c−a) 2+(d−b) 2

Being a,b,c and d in GP,

ba= cc= dd ,b 2=ac,c

2=bd and ac=bd, ad=bc,

RHS=b 2+c 2−2bc+c 2+a 2 −2ac+d 2+b 2−2bd=2b

2 −2bc+2c 2+a 2 −2b 2+d 2−2c =a

2+d2−2ad=(a−d) 2 =LHS

Hope it is helpful for you