Question

The difference between the square roots of a number is 30. What is the number?

Answer 1

If x is the number,


`√(x) -(- √(x) )=30`

(The difference or distance between two numbers is the larger one minus the smaller one.)


`2 √(x) =30 \\ √(x) =15 \\ (\sqrt(x))^2=15^2 \\ x=225`