Question

Find the value of x-y, when x+y = 5 and xy =4.​

Answer 1

Answer:

5 is the answer

Step-by-step explanation:

given,x+y=5 then,[x+y]^2=25

=x^2+y^2+2xy=25

=x^2+y^2+8=25

=x^2+y^2=13

now,let us take [x-y]^2

=x^2+y^2-2xy

=13-8

=5