Question

The product of a and b is x , and the sum of a and b is y
If x and y are both positive numbers, what is
1/a + 1/b
in terms of x and y?

Answer 1

y/x

Answer 2

1/a+1/b=(a+b)/ab=y/x

Answer 3

\[y/x\]

Answer 4

1/a + 1/b = (a+b)/(ab) = y/x.