Question

May anyone solve this..No spam..​

Answer 1

Answer:

5

Step-by-step explanation:

x²-6x+y²+4y+13=0

or, x²-6x+y²+4y+9+4=0

or, x²-6x+9+y²+4y+4=0

or, (x²-2.3.x+3²)+(y²+2.2.y+2²)=0

or, (x-3)²+(y+2)²=0

Square of two positive terms is 0

x-3=0

x=3

and

y+2=0

y=-2

so,

x-y=3+2

=5