Question

If x2+y2 = 25 and xy = 8 , find x-y.​

Answer 1

Step-by-step explanation:

first square the term which has to be find out...

(x-y)²= x²+y²-2xy....1st eq№

notice..

(x²+y²)-2(xy)

put the value of x²+y² and xy in eqn.1

(x-y)²= (25)-2(8)

=25-16

(x-y)² = 9

x-y=√9

x-y=3

this is ur answer....