Q: 138 (IAS/1996)

If A = x^2 - y^2.
B = 20 and
x + y = 10, then
question_subject: 
Maths
question_year: 
1996
question_exam: 
IAS
question_sub_subject: 
Mathematics
question_topic: 
Mathematics
stats: 
0,240,72,16,32,24,240