Question

If x2 + y2 – 2x +4y=-5, then what are the values of x and y?​

Answer 1

Answer:

x = 1 & y = -4

Step-by-step explanation:

x²+y²-2x+4y=-5

or, x²+y²-2x+4y+5=0

or, x²-2x+1+y²+4y+4=0

or, (x-1)²+(y+4)²=0

we know that if the sum of two square value is 0 then the individual square value is 0

so

(x-1)²=0

x-1=0

x=1

and

(y+4)²=0

y+4=0

y= -4