To do this you must solve for y. This requires completing the square. First get everything with no y in it over to the right by adding its opposite: (y^2 = y squared)

y^2 + 4y = -x^2 + 5x + 13

Then do the square and complete it

(y+2)^2 = -x^2 + 5x + 13 +4 = -x^2 + 5x + 17

square root both sides. This is where the two functions come in, one plus and one minus

y + 2 = +sqrt(-x^2 + 5x + 17) and

y + 2 = -sqrt(-x^2 + 5x + 17)

Now add -2 to both sides of each to get your two functions.

okey. try it this way.

xsquared+ysquared-5x+4y-13=0

collect like teams. xsq.-5x+ysq+4y-13

x(x-5)+y(y+4 )-13=0 subtract the whole no- 13 in bot sides.

x(x-5)+y(y+ 4)- 13+13=0-13,

x+y= -13 ,x-5= -13, y+4= -13

finish it up , ican’t spoon feed you.

i’m maths instructor sending you this concepts: a million) do no longer fix specified time, 2) interest is the motivating element to benefit arithmetic. 3) very maximum vital factor to be talked approximately is “practice Examples and workouts in uncomplicated terms. 4) do no longer bypass over any financial ruin. 5) once you’re a pupil of state board,do no longer learn something from out edge the textual content textile e book. 6) Refer previous 12 months questions. 6) if ISC, you will desire to refer greater advantageous books. 7) interest and confusing artwork with useful might deliver you 100percentsuccesses