Question

Find the value of x2+ y2 when:
(i) x - y = 11 and xy = 17​

Answer 1

Step-by-step explanation:

if xy=17 then x= 17/y ..... (1)

sub EQ 1

x-y= 11

17/y - y = 11

17-y² = 11y

y²+11y-17=0

use formula -b+_√ b²-4ac/2a

u will get answer