Archive
16th of September 2015
Mathematics
Q:

Sumit Roy Rebooted 2nd Edition - ICSE - Class X

Wednesday, September 16, 2015 at 18:14:PM

A:

fraction numerator x squared plus x plus 1 over denominator y squared plus y plus 1 end fraction equals fraction numerator x squared minus x plus 1 over denominator y squared minus y plus 1 end fraction rightwards double arrow fraction numerator x squared plus x plus 1 over denominator x squared minus x plus 1 end fraction equals fraction numerator y squared plus y plus 1 over denominator y squared minus y plus 1 end fraction A p p l y i n g space c o m p e d e n d o space a n d space d i v i d e n d o comma space w e space g e t fraction numerator 2 x squared plus 2 over denominator 2 x end fraction equals fraction numerator 2 y squared plus 2 over denominator 2 y end fraction rightwards double arrow open parentheses x squared plus 1 close parentheses y equals open parentheses y squared plus 1 close parentheses x rightwards double arrow x squared y plus y equals y squared x plus x rightwards double arrow x squared y minus y squared x plus y minus x equals 0 rightwards double arrow x y open parentheses x minus y close parentheses minus open parentheses x minus y close parentheses equals 0 rightwards double arrow open parentheses x minus y close parentheses open parentheses x y minus 1 close parentheses equals 0 S i n c e comma space x not equal to y comma space x y minus 1 equals 0 rightwards double arrow x y equals 1

Wednesday, September 16, 2015 at 18:24:PM