Question

If x-y= 8 and xy=5, find x^2+y^2 give the answer with explanation.​

Answer 1

Answer:

(x - y)² = x² + y² - 2xy

64 = x² + y² - 10

74 = x² + y²

Answer 2

Step-by-step explanation:

squaring the both sides of (x-y)2

(x-y)2=(8)2

x2+y2-2xy=64

x2+y2-2*5=64 (since: x-y=5)

x2+y2-10=64

x2+y2=64+10

And:-74