whats grater -√45 or √15

Answer 1

√15 is greater than -√45.

To compare these two values, we can rationalize the denominators of both values.

-√45 can be written as -√(9*5), which simplifies to -3√5.
√15 remains √15.

Since -3√5 is a negative value and √15 is a positive value, √15 is greater than -√45.