Math, asked by harshaharids7957, 9 months ago

12. if X+y =3,x^2+y^2 =5 then xyis

Answers

Answered by Anonymous
1

If x+y=3, x2+y2=5 then find the value of xy

x+y=3

x=3-y

putting the value of x

in this

x²+y²=5

(3-y) ²+y²=5

9-6y+y²+y²=5

2y²-6y+9-5=0

2y²-6y+4=0

2y²-4y-2y+4=0

2y(y-2)-2(y-2)=0

(2y-2) (y-2) =0

2y-2=0 or y-2=0

y=1 or y=2

so x=2 or 1

so x×y=2×1 or 1×2=2

Step-by-step explanation:

Hope you have satisfied with this answer.So Please follow me and thank me and make me as brainlesset soon and vote my answer

Answered by Anonymous
2

Step-by-step explanation:

Hope you have satisfied with this answer.So please follow me and thank me and make me as brainlesset soon and vote my answer.

Attachments:
Similar questions