What multiplies to -10 and adds to -9?

Answer 1

To find two numbers that multiply to -10 and add up to -9, we need to consider the factors of -10. The factors of -10 are (-1, 10), (1, -10), (-2, 5), and (2, -5). Among these pairs, (-1, 10) is the pair that adds up to -9. Therefore, the two numbers are -1 and 10.