I need help on this I got a quiz

What are two numbers that add up to -9 and multiply to -10 best answer gets branliest and 100 extra points

Prove the converse of the pythagorean theorem using similar triangles. the converse of the pythagorean theorem states that when the sum of the squares of the lengths of the legs of the triangle equals the squares length of the hypotenuse, the triangle is a right triangle. be sure to create and name the appropriate geometric figures.

597008.439431 to the nearest thousand