Question

7
8 यदि x+y= 9 और xy = 18 हो, तो x2 +y2 का मान होगा-
20/h) A) 25/d) 24(e) 0​

Answer 1

Answer:

25 is the correct answer.

Step-by-step explanation:

(x+y)^2= x^2 +y^2 + 2xy

so, x^2 + y^2 = (x+y)^2 -2xy

since, (x+y)=9   (x+y)^2= 81

xy=18  so, 2xy=36

now you can find answer easily