Question

If x+y=5 and xy=4 find the value of x2+y2

Answer 1

Step-by-step explanation:

ANSWER

x - y = 5

xy = 34.

(x−y)

2

=x

2

+y

2

−2xy=25

x

2

+y

2

−2×84=25

x

2

+y

2

=193

also, (x+y)

2

=x

2

+y

2

+2xy

=193+84×2

= 361

x+y=

361

=14

solution

Answer 2

my freind answer ok na check it