if x²+y²-2x-4y+5=0 then find the value of x-y.​

Question

if x²+y²-2x-4y+5=0 then find the value of x-y.​

in progress 0
Hadley 1 month 2021-08-19T21:58:09+00:00 1 Answer 0 views 0

Answers ( )

    0
    2021-08-19T21:59:28+00:00

    Answer:

    x2+y2−2x+4y+5=0

    (x−1)2+(y+2)2−5+5=0

    ⇒(x−1)2+(y+2)2=0

    Since, radius is 0, hence its a point

    Alternative method:

    Here, a=b=1

    r=1+4−5=0

    Hence, a circle of radius 0. So, its a point.

Leave an answer

Browse
Browse

18:9+8+9*3-7:3-1*13 = ? ( )