Question

a²+b²=41,ab=20 (a-b)= ??????????

Answer 1

now ,
(a-b)^2=a^2+b^2- 2 (ab)
(a-b)^2=41-2 (20)
(a-b)^2=41-40
(a-b)^2=1
(a-b)=_/1
a-b=1
HOPE IT HELPS! ! !

Answer 2

1 or -1 can be the answer