Question

If xy = 50 and x ^ 2 + y ^ 2 = 125 , find a. x + y. b. x - y​

Answer 1

xy= 50

x²+y²= 125

hence x= 10 and y = 5

a) x+y = 10+5=15

b) x-y = 10-5 = 5

Answer 2

x+y=225

x-y=25

Step-by-step explanation:

a.

x+y=X2+y2+2xy

x+y = 125+2x50

x+y=125+100

x+y=225

b.

x-y=X2+y2-2xy

x-y=125-2x50

x-y=125-100

x-y=25