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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.
-1
Composite. 222111 has 9 as one of its factors [sum of its digits adds up to 9]. A Prime Number has only two factors : 1 and itself. Since this has at least one additional factor, it is composite.
The answers are: -5*-3 = 15, -8*7 = -56 and -4*-12 = 48
1