If A = (a + b , a-b) and B (-a + b, -a-b), then find the distance AB .

If A = [ (a , b) , (-b , a)] and B = [ (a , b),(b , a)] , find AB .

If abs(a + b) = abs(a-b) then

a+b=8 and ab=15 then find the value of a&b

If a+ b =1 and a-b =7, find : ab

If a+b=7 and ab=10, then find a−b.

If (a,b) is the mid - point of the line segment joining the points A (10,-6), B(k,4) and a-2b =18, then find the value of k and the distance AB.

If (a,b) is the mid - point of the line segment joining the points A (10,-6), B(k,4) and a-2b =18, then find the value of k and the distance AB.

If a-b = 5, ab = 14, find the value of a + b