Question

If x+ y = 8 and x2 + y2
26 then xy =
=​

Answer 1

Answer:

xy = 19

Step-by-step explanation:

we know

(x+y)²= x² + y² +2xy then

x²+ y² = (x+y)² - 2xy

Now put values

26 = 8² - 2xy

-2xy = -38

=> xy = -38/-2

=> xy = 19 Ans.