Question

15.If x= √+√−and y = √−√+, find the value of x² + xy -y².

Answer 1

Answer:

this your top ans ok byby

Answer 2

Correct 0

Step-by-step explanation:

first condition

sub √+ &√-

x= √+√- =0

value of x= 0

seconde condition

sub √- &√+

y= √+√- =0

value of y =0

put x =0 and y= 0 in equation

x square + xy - y square

0+0×0-0

=0

the value is 0