Question

If x+y=5, xy=4, then find x²+y²​

Answer 1

Answer:

17=x^2+y^2

Step-by-step explanation:

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

(5) ^2 =x^2 + y^2 + 2 × 4

25 = x^2+y^2+ 8

25-8 = x^2 + y^2

17 = x^2 + y^2 [ANS]

Answer 2

Answer:

x^2=1,y^2=1

Step-by-step explanation:

i). x+y=5

1+4=5.

i)xy=4

x×y=4

1×4=4