Question

if x-y=8 and xy=5,findx^2+y^2 please answer for 50 points​

Answer 1

Answer:

x is a greter then 5. but 2+2=3(-1is a mineas)

Answer 2

Answer:

Answer:

GIVES THAT -

x - y = 8x−y=8

xy = 5xy=5

TO FIND :-

X² + Y²

SOLUTION :-

{(x - y)}^{2} = {x}^{2} + {y}^{2} - 2xy(x−y)

2

=x

2

+y

2

−2xy

So ,

{x}^{2} + {y}^{2} = {(x - y)}^{2} + 2xyx

2

+y

2

=(x−y)

2

+2xy

{x}^{2} + {y}^{2} = {(8)}^{2} + 2 \times 5x

2

+y

2

=(8)

2

+2×5

{x}^{2} + {y}^{2} = 64 + 10 = 74x

2

+y

2

=64+10=74