MY CART (5)

Use Coupon: CART20 and get 20% off on all online Study Material

ITEM
DETAILS
MRP
DISCOUNT
FINAL PRICE
Total Price: R

There are no items in this cart.
Continue Shopping
Menu
palash awasthi Grade:
        


no. of positive integral solution of   x^4 - y^4  = 3789108


a) 0


b) 1


c) 2


d) 4


7 years ago

Answers : (1)

mycroft holmes
270 Points
										

Both x and y are even or both x and y are odd (i.e. x and y are of the same parity)


 


If, both x and y are odd, then since every odd square is of the form 8k+1, LHS is divisible by 8, whereas RHS is not.


 


If both x and y are even, then LHS is divisible by 16, whereas we have already seen that RHS is not divisible by 8 and hence not divisible by 16 too.

7 years ago
Think You Can Provide A Better Answer ?
Answer & Earn Cool Goodies
  • Complete JEE Main/Advanced Course and Test Series
  • OFFERED PRICE: R 15,000
  • View Details

Ask Experts

Have any Question? Ask Experts

Post Question

 
 
Answer ‘n’ Earn
Attractive Gift
Vouchers
To Win!!! Click Here for details